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Proceedings of the Chemical Society, Vol. 23, No. 323 |
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Proceedings of the Chemical Society, London,
Volume 23,
Issue 323,
1907,
Page 81-94
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摘要:
Issued 28/3/07 PROCEEDINGS OF THE CHEMICAL SOCIETY. Vol. 23. No. 323. Thursday, March 21st, 1907, at 8.30 p.m., Sir HENRYE. ROSCOE, F.R.S., Past President, in the Chair. Messrs. W. J. Bowis, L. M. Deane, E, W. L. Foxall, W. Godden, C. M. W. Grieb, and J. L. Simonsen were formally admitted Fellows of the Society. Before commencing the business of the Society, Sir HENRYROSCOE said that the Fellows would have learnt with great regret of the loss which their science, and especially French chemistry, had to deplore in the sudden and pathetic death of Marcellin Berthelot. This was not the occasion to dwell upon the important work which he had accomplished or on his noble character. These considerations would doubtless be fully dealt with hereafter.All that the Follows of the Society now could do was to express their grief at his death and their sympathy with his family. The CHAIRMAN also alluded with feeling to the death of their old Fellow, Prof. Warington. Certificates were read for the first time in favour of Messrs. : Kenneth Somerville Caldwell, B.Sc., Ph.D., St. Bartholomem’s Hospital, E.C. John Jacob Fox, 6, Alkham Road, Stamford Hill, N. 82 Joseph Henry Hall, B.Sc., 84, The Grove, Wandsworth, S.W. Thomas Featherstone Harvey, 84, Henry Road, West Bridgford, Nottingham. Edward Houghton, Glenhyrst, 106, Saltergate, Chesterfield. Carl Lewis, P.O. Box 36, Johannesburg, S. Africa. Herbert Victor Mitchell, 26, Brookfield Avenue, Walthamstow. George Colleymore Sturrock, Capt., R.A., Arubankad, Nilgiris, India.Sam Mortimer Sutcliffe, 4, Clive Place, Bradford. Of the following papers, those marked * were read: "80. Synthesis of polypeptides." By Emil Fischer. Continuing his work on the synthesis of polypeptides the author has prepared an octadecapeptide containing fifteen glycocoll and three I-leucine residues. Pentaglycylglycine was allowed to react with d-bromoisocapronyl- diglycylglycyl chloride, and the product so obtained was treated with ammonia with formation of I-leucyloctaglycylglycine. By a repetition of this series of reactions the octadecapeptide, I-leucyltriglycyl-Z-leucyl-triglyc yl-Z-leucyloctaglycylgl ycine, NH2*CH(C,H,)*GO[ NH*CH,*CO],*NH*CH(C,H,) CO[NH*CH,*CO],--NH*CH(C,HJ CO[NH*CH,*CO],*NS-CH,*CO,H, has been synthesised.DISCUSSION. The CHAIRMANsaid that he only voiced the feeling of the Society when he expressed his admiration for the interesting and remarkable lecture to which they had all listened with pleasure. In reciprocating to the full the words which had fallen from Professor Armstrong's lips as to the wonderful character of the researches which Professor Fischer had described, he remarked that whilst they looked upon these researches as typical of the great strides made in German chemical science, he ventured to think that Professor Fischer would agree with him when he said that he believed that the work done by the Fellows of our Chemical Society at the present time would bear not unfavourable comparison, both as to quality and quantity, with that which is now being carried out in Germany.Indeed, when he looked back to the early years of the Society, as his friend Sir William Perkin and he could do, and remembered the progress which it had made, the activity which the Fellows of the Society had shown in recent years in advanc- ing the progress of their science struck him as most remarkable, and this in spite of the many drawbacks which have often been said 83 to discourage original research in England. We could not indeed vie with Germany in the special department of research which had just been laid before the Society, and this for a very simple reason, that there was only one Emil Fischer. “61. (‘Organic derivatives of silicon.Part 111. dl-Benzylmethyl-ethylpropylsilicane and experiments on the resolution of its sulphonic derivative.” By Frederic Stanley Kipping, dl-Benzylmethylethylpropylsilicane, SiMeEtPrBz (PYoc.,1905, 21, 65),is sulphonated by sulphuric acid at about 130°, yielding a mixture of acids of which two were isolated in the form of their Z-menthylamine salts. Analyses of one of these salts seem to sliow that it is derived from benxylethylpropylsilicolsu~phonicacid and has the formula EtPrSi(0H).CH,*C,H,*SO,H,CIOHOIN, but as it is formed in small amount only it has not been very thoroughly investigated; the formation of such an acid from the silicohydrocarbon would necessitate the hydrolytic separation of the methyl group in a manner similar to that in which the phenyl group is displaced on sulphonating phenylbenzylethylprapylsilicane (Trans., 1907, 91, 224).The salt crystallises in prisms and melts at 210-212’. The second 1-menthylamine salt isolated from the mixture is derived from dl-benzylmethylethyIl,ro;uylsilicanesulp~on~eacid and has the formula SiMeEtPr*CH,*CGH,*SO,H,Cl,H,,N.This compound is much more easily obtained from the product of the sulphonation of benzyl-methylethylpropylsilicane with chlorosulphonic acid. It crystallises best (+3H,O) from wet, light petroleum and when dehydrated melts at 222-123’. The 1-menthylamine, quinins, cinchonidine, cinchonine, narcotine and several other salts of this dl-silicanesulphonic acid have been crystallised fractionally under various conditions, but without the faintest indication of a resolution of the acid having been observed.*62. “The reduction of carbon dioxide to formaldehyde in aqueous solution.” Henry John Horstman Fenton. The author finds that by the action of metallic magnesium, under appropriate conditions, on an aqueous solution of carbon dioxide, recognisable quantities of formaldehyde can be obtained and that the amounts are considerably increased if weak bases, such as ammonia., aniline, phenylhydrazine or aluminium hydroxide, are also present. 84 Further, it is found that formic acid may readily be reduced, in part at any rate, to formaldehyde by the action of magnesium so that the desired reduction of carbon dioxide may be effected also in two stages, with formic acid as the intermediate product.”63. (‘The mechanism of the rusting of iron.” By Gerald Tattersall Moody. The author has previously shown that the presence of acid is essential for rusting to occur. The following experiment enables the exact mechanism of the production of rust to be visualised :-In the bottom of a glass cylinder are placed some rods of bright iron such as French nails. These are only loosely packed, for the most part heads upward, and are so arranged that some of them remain vertical whilst others occupy inclined positions. Recently boiled distilled water is then poured into the cylinder until it stands about one and a half inches above the heads of the nails. The mouth of the cylinder is loosely closed with a sheet of paper so as to exclude dust and at the Fame time to allow free access of air to the water,whereby carbonic acid and oxygen are absorbed.In the course of twenty-four hours the water shows signs of becoming turbid and shortly afterwards a copious separation of brown particles from the solution is distinctly observed. These brown particles are continuously formed and gradually settle on the heads of the nails and on the upper parts only of those nails which are inclined. The under parts of the inclined nails and the vertical nails remain bright, no general corrosion of the surfaces being observable. At the end of seven days a thick layer of hydrated ferric oxide has collected on the upper surfacss of the nails and also on the bottom of the cylinder. If a sheet of hardened filter paper or some other material, which allows of diffusion, be placed in a horizontal position imrnediately over the nails at the beginning of the experiment, the rust which separates from the solution abwe it gradually collects on its upper surface and eventually forms a thick layer.Ths separation of the rust from the water and its non-formation on the surface of the iron can be explained only as an oxidation of ferrous iron actually in solution. This is in strict accordance with the experimental evidence already advanced and shows that, in rusting, iron is first; dissolved with formation of ferrous salt which subsequently oxidises to rust. DISCUSSION. The CHAIRMANremarked that all those present must be much struck by the extremely simple and convincing experiments which the author had described, showing that the first step towards the rusting 85 of iron was that the metal entered into solution in the liquid.He ventured to doubt,, however, whether the author had even now got to the bottom of the subject, simple though it apparently was, because he had not explained how the solution of the metal was effected, whether this solution occurred in presence of carbonic acid only or whether in its absence. Dr. MOODYsaid that he had already described experiments which showed conclusively that the presence of acid is essential for rusting to occur (Tmns., 1906, 89, 720). In absence of acid, pure iron was allowed to remain in contact with water and oxygen for several weeks without even one speck of rust being formed, and without the iron undergoing any change either in appearance or in weight.It was specially noteworthy that when pure iron was placed in a dilute solu- tion of hydrogen peroxide free from acid, no oxidation or other change in the iron occurred, although oxygen was freely evolved from every part of the immersed metal. In this way the indifference of iron towards oxygen in presence of water could be easily and conclusively demonstrated. In the experiment he had shown the Society that even- ing, the iron was undoubtedly dissolved by carbonic acid, and the ferrous bicarbonate thus formed was converted into rust by oxygen, which, simultaneously with the carbonic acid, diffused into the solution from the atmosphere.*64. (‘Influence of non-electrolytes and electrolytes on the solubility of sparingly soluble gases in water. The question of hydrates in solution.” By James Charles Philip. It is suggested that the influence of non-electrolytes and electro- lytes on the solubility of gases may be adequately interpreted by reference to two factors. Firstly, it may be supposed that the non- electrolyte or electrolyte takes no part in the absorption, and accord- ingly the standard absorbing volume should be not 1 C.C. or 1 litre of the solution, but that volume of the solution which contains 1 gram or 1000 grams of the pure solvent. Secondly, hydration of the non-electrolyte or electrolyte may occur, and it may be supposed that the solvent which is thus attached is no longer free to absorb the gas.These suggestions have been tested with satisfactory results by reference to available experimental data, and the values found for the average molecular hydration of dissolved salts are in fair agreement with the values reached by other and widely different methods. 86 DISCUSSION. Sir WILLIAM asked whether it must not be held that both RAMSAY the solvent and the solute take part in dissolving agas. Forexample, a solution of sugar in water is a mixture of liquid sugar and liquid water, and it might be supposed that hydrogen would dissolve in both water and in sugar according to its solubility in each, and to their relative amount.Mr. R. J. CALDWELLdrew attention to the fact that Euler and others had recognised that the absorption coefficients of the permanent gases, as well as the solubility of ethyl acetate, are equally af-fected by the presence of dissolved solids. It had long been clear to him that this regularity could be accounted for by assuming that a diminution of the amount of free water was caused by the formation of hjdrates of the dissolved substance; niost of the material had been collected for a communication on the subject. From the very accurate values given by Winkler for the solubility of oxygen, making due allowance for the fact that Winkler used volume-normal solutions, he had calculated that the average degree of hydration of calcium chloride in a solution of gram-molecular strength (weight-normal) was in the ratio CaC1, : 21H,O.This result is in accord with the value CaCl, :22H,O he had obtained by the sugar inversion method ; in the case of other salts, a like agreement had been found, It was dificult to see how such agreements could be reconciled with the ionic dissociation hypothebis. Dr. PHILIPsaid that it was certainly possible that hydrogen was soluble to some extent in chloral hydrate and sucrose, but it appeared unlikely in view of the fact that the average molecular hydration calculated on the bais of the two factors suggested in the paper agreed with values obtained by methods into which the question of solubility of hydrogen in these substances could not possibly enter.The view that hydrates exist in aqueous solutions of electrolytes was not inconsistent with a general adherence to the iouic theory. "65. "A new class of organo-metallic compounds. Preliminary notice. Trimethylplatinimethyl hydroxide and its salts." By William Jackson Pope and Stanley John Peachy. No alkyl compounds of metals belonging to group S of the periodic table have hitherto been described. The authors find that the chlorides, or in some cases the oxides, of iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, and platinum, belonging to group 8, and of gold, belonging to group 1,react vigorously 87 with magnesium methyl iodide ;they desire to reserved the study of t’he action of Grignard’s reagent on compounds of the metals named Trimsthylplc~tinimet~~yliodide, (CH,),PtI, is formed by the action of platinic chloride dissolved in ether on magnesium methyl iodide in ethereal benzene solution ;after treating with water and extracting with benzene, the benzene solution yields the new compound on evapora- tion.It crystallises in straw-yellow plates, is oot volatile, and decorn- poses on heating with slight explosion; it is very stable towards reagents, and is not attacked in the cold by strong caustic alkalis, alkali sulphides, or by nitric, hydrochloric, and sulphuric acids. It is not further acted on by magnesium methyl iodide. On boiling for several hours with silver hydroxide in a moist mixture of benzene and acetone, it is converted into trimetl,ylplati?zinzethyl hydroxide, (CH,),Pt*OH ;this substance is insoluble in water, gives no alkaline reaction with litmus, and crystallises in colourless rhombic dodecahedra belonging to the cnbic system.Trinzethylpl~tinirnethylnitrate, (CH,),Pt*NO,, obtained by dissolving the hydroxide in nitric acid, crystallises in colourlees plates and is freely soluble in water. On adding an alkali chloride to its aqueous solution, trimethyZpZatirLimeth?/lchloride, (CH3),PtC1, is precipitated ; this salt crystallises from chloroform in colourless, rhom bic dodeca- hedra belonging to the cubic system. In a similar manner a number of other salts have been prepared, including the bromide and the cyanide; the latter is hydrolysed on heating with caustic potash with evolution of ammonia.ISCUSSION. The CHAIRMANcongratulated the authors on having opened oiit an entirely new branch of investigation which might indeed be said to be a wonderful (( find.” 66. ‘(Some compounds of guanidine with sugars. Part I.” By Robert Selby Morrell and Albert Ernest Bellars. When an alcoholic solution of guanidine is added to dextrose, laevulose, mannose, arabinose, rhamnose, galactose, or mdtose, dissolved in ethyl alcohol, white, microcrystalline precipitates are obtained. The genet a1 formula for dextrose-, Iaevulose-, and rnnnnose-guanidine is 3C,H,,O,,SCN,H,. In lV/2 solutions, the cornpounds are dissociated into their components to the extent of 71 per cent.The depression of the freezing points of mixed dextrose and guanidine solutions mas determined on the lines of H. Euler’s researches (Bey., 1905, 38, 2551 ; 1906, 39, 350), and the results confirm his view as to the acid character of carbohydrates in aqueous solution. ‘lhe strength of 88 guanidine as a base compared with caustic soda was determined by (GI,) the saponification of ethyl acetate, (b) the velocity of fall in rotation angle of a hyoscyamiue solution in the presence of guanidine (Will and Bredig, Eer., 1888, 21, 2777). The strengths of guanidine and caustic soda were found to be in the ratio of 0.8 : 1. Aqueous solu- tions of dextrose-, laevulose-, or mannose-guanidine show a gradual fall in optical rotation to a minimum value, which is the eamefor the three compounds. This behaviour is similar to that investigated by Lobry de Rruyn in the action of alkalis on sugars.The results obtained from the study of the mutarotation of solutions of dextrose-, laevulose-, or m tnnose-guauidine may be summarised as follows : (1) the fall in optical rotation to a constant minimum represents an apparent equi- ibrium in the case of dextrose- and laevulose-guanidine between two sugars through an intermediate substance X,the concentration of which is very small, Gt+ X t+3'. (2) Tho velocity constants for the transformation of dextrose into laevulose, and vice versd, were found to be 0:0015 and 0.0021 respectively ; the velocity constants for the change of inannose into laevulose and dextrose are 0*0005 and 0.00036 respectively. The velocity of the reverse change of laevulose aiid dextrose into mannose is very small.(3) There is a slow dis- appearance of X, the intermediate substance, to form acids. When optical equilibrium has been reached, the ratio of laevulose to dextrose remains constant until the formation of acids ceases. The changes G may be represented by the scheme M ;n ""X -+ acids. x FJP 67. The action of aluminium chloride on naphthalene. Formation of PP-dinap hthyl, te tr anap hthy 1, and te tr amethyler ythrene." By Annie Homer. The action of aluminium chloride on naphthalene has been studied in detail. PP-Dinaphthyl, C20H14,was formed, as had been indicated by Friedel and Crafts.Besides this compound, three new hydro-carbons were isolated, namely : (1) an oil, C,4H16,probably tetramethyl-Naphthalene ; (2) a resinous hydrocarbon, C26H22,to which the name tetramethyZei*ythrenehas been given ; and (3) a yellowish-red solid, tetranciphthyl, C,oH26. Tetramethylerythrene is deep red, and its solutions, besides being highly fluorescent, show two absorption bands in the blue and violet portions of the spectrum respectively. PP-Dinaphthyl and tetranaphthyl are produced by condensation of the naphthalene molecules. The mode of formation of tetramethyl- erythrene is open to question. 89 68. '' Mercurous hyponitrite." By Prafulla Chandra RBy. The author has succeeded in preparing this salt in a purer form than that described in a former paper (Tram.,1897, 71, 348).A solution of mercurous hyponitrite in nitric acid, unlike the silver salt, undergoes slow dissociation into mercury and mercuric hyponitrite. 69. '' The decomposition of mercurous and silver hyponitrites by heat." By Prafulla Chandra RBy and Atul Chandra Gaiiguli. The gaseous products of decomposition of mercurous hyponitrites are nitrogen, nitrogen monoxide, and nitrogen dioxide, the proportion of the first being very small. Silver hyponitrite also yields the same gases with a much larger proportion of nitrogen dioxide. The authors are of opinion that these salts have both an oxylic and imidic constitution. 70. Studies in optical superposition. Part 111." By Thomas Stewart Patterson and John Kaye.I-Menthyl diacetyl-i-tartrate has been prepared and its rotation has been determined both in the homogeneous state and in solution in ethyl alcohol, benzene, and nitrobenzene. The results, taken in con- junction with those previously published (Trans.,1905, 87, 33 ; 1906 89, 1884), furnish for the first time thoroughly valid evidence as to 'Sthe untenability of van't H~ff assumption regarding optical super- position. The following table exhibits this comparison at different tempera- tures for the homogeneous substances : I. 11. 111. IT. to* I-Menthyldiacetyl-cl-tartrate. I-Menthyldiacetyl-I-tartrate. Mean of I and 11. I-Menthyldiacetyl-i-tartrate. A IT-I I I. 20" -256" -360" -308" -274" 3 4" 100 328 382 305 280 r 130 216 390 303 282 "1 For solutions, the values found were as follows : I.11. 111. I v. Solvent. I-Menthyldiacetyl-&tartrate. I-Menthyldiacetyl-I-tartrate. Mean of I and II. I -Menthy1diacetyl-i-tartrate. A. IV-111. Ethyl alcohol -268" (p: 5) -367" (p : 5) -317.5" -292" (p:0.455) 25.5" Benzene ...... 285 ,, 313 ,, 299-0 248 (p: 5'2) 51.0 Nitrobenzene 238 ,, 355 ,, 296.5 244 (p: 4-38) 52.5 Both in the homogeneous condition and in solution therefore the rotation of the i-tartrate is markedly greater (that is, less negative) 90 than the means of the values for the d-and I-tartrates, and this furnishes conclusive evidence that the rotation due to a given asym- metric atom in a compound of two or more asymmetric rdicles is not independent of the configuration of the other group or groups with which it is combined.71. An extension of the benzoin synthesis.” By Reginald William Lane Clarke and Arthur Lapworth. Although mandelonitrile or its benzoyl derivative is too unstable to condense with &unsaturated ketones, yet its aniline derivative, benzylideneaniline hydrocyanide, can be made to do so. With carvone, phenyZimino-P-be?z.zoyZdihydrocai.voirzeis obtained : “HPh>CHPh + CH<::\Ei>CO =CN -. NPh:CPh*CH<CHMe>CO + HCN,C,H*o and this, on hydrolysis with acids, yields two stereoisomeric P-benaoyl-dihgdrocarvones. With benzylideneacetophenone, y-cyaizo-a-benxoyl-y-ccnilino-py-di-phenylpropam is the product : NHPh>CHPh + CHPh:CH*CO*Ph= CN NHPh>CPh*CHPh*CH,*CO*Ph,CN the constitution of which was shown by converting it by heat into CPh:$?Hwater, hydrogen cymide, and tetraphenylpyrrole, N Ph< CEh: CPh’ In neither instance does benzylideneaniline alone afford any analogous products.These condensations were shown to be extensions of the well-known (‘benzoin synthesis ” as interpreted by one of the authors (Trans., 1903, 83, 1004). 72. L6 Interaction of starch and carbon disulphide. Xanthogenic esters of starch.” By Charles Frederick Cross, Edward John Bevan, and John Frederick Briggs. Alkali starch in its hydrated forms is a gelatinous impenetrable mass which is only superficially attacked by carbon disulphide. Starch moistened with the disulphide and then treated with a sodium hydroxide solution (15 to 20 per cent.) is brought into the condition for quantitative reaction and conversion into the xanthogenic ester (sodium salt).The derivatives are analogous in all respects to those of cellulose (Trans.,1893, 63, 837). 91 73. “ The estimation of small quantities of nitrogen peroxide.” By Robert Robertson and Sidney Scrivener Napper. The method depends on the changes observed in the characteristic absorption spectrum of nit1 ogen peroxide as its concentration in dilute mixtures is increased. It was found that a few of the more prominent. groups of lines were visible at a concentration of 0.05 per cent. nitrogen peroxide, and that as the proportion was raised the lines increased in intensity and number until the violet end of the spectrum was completely absorbed in mixtures approaching a concentration of 1.0 per cent.These differences are sufficiently well marked to enable a process to be worked out for the quantitative estimation of the concentration by comparison with standard mixtures. Photographic comparison was employed, and for this purpose a series of standard photographs covering a range of concentration from 0.05 to 1 per cent. was prepared. The method when applied to the estimation of small quantities of nitrogen peroxide in air gives very satisfactory results, and the process which is applicable to any gaseous mixture has been used successfully for the investigation of the gases evolved during the slow decomposi- tion of guncotton.74. “The evolution of nitrogen peroxide in the decomposition of guncotton.” By Robert Robertson and Sidney Scrivener Napper. Previous investigators have given accounts of experiments in which guncotton was slowly deconiposed at temperatures near 130’ in a vacuum and in a current of carbon dioxide, and have stated that only a small quantity of nitrogen peroxide was evolved, or have made no reference to its presence. With the help of the method described by the authors (compare preceding paper) a careful study has been made of the gases given off by guncotton when heated under various conditions. These include heating (1) in a vacuum; (2) in a stream of carbon dioxide ;(3) in an unchanged atmosphere of carbon dioxide ;(4) in nitro- gen dioxide, and (5) in air.In all cases more than 10 per cent. of the total nitrogen evolved was in the form of nitrogen peroxide, and a study of the results shows that the proportion is largely dependent on the conditions of experiment ; the deposition of water and prolonged con- tact with the heated guncotton tend to reduce it, and when these two conditions are not present the proportion rises to 40-50 per cent. This occurs when the guncotton is heated under tha conditions of the Will test, and reduction of the rate of the current of carbon dioxide 92 causes a reduction of the proportion of nitrogen peroxide evolved. This effect is apparently due to the action of the nitrogen peroxide on the guncotton, and is accompanied by a rise in the total amount of nitrogen evolved, indicating that oxides of nitrogen cause an increase in the rate of decomposition of guncotton.75. (‘An isomeric change of dehydracetic acid.” By John Norman Collie and Thomas Percy Hilditch. During the preparation of a large quantity of triacetic lactone, it has been noticed that if sulphuric acid of about 85 per cent. instead of about 90 per cent. is allowed to act on dehydracetic acid, the yield of triacetic lactone is much diminished. On pouring the product into water, an acid, C8H804,isomeric with dehydracetic acid, has bee11 separated. It has a molecular weight of ’169, is a true acid, not a lactone, melts at 99O, and has an electrical conductivity k=O*OO152.When heated to about 200’ it is converted almost quantitatively into carbon dioxide and dimethylpyrone. On boiling with excess of strong solution of barium hydroxide it yields barium acetate, acetone, and barium malonate. A solution of the neutral sodium salt on boiling is converted into sodium dehydracetate, from which dehydracetic acid is precipitated by adding an acid. The free acid, when heated with an excess of ammonia, given the ammonium salt of a lutidonecarboxylic acid. This acid, C,H,O,, seems to agree in all respects, except its electrical conductivity, with an acid obtained by Peist (Annalen, 1890, 25’7,253), and is a true pyrone- carboxylic acid : 93 ADDITIONS TO THE LIBRARY. I. Donations. Rey, Jean.Essais de Jean Reg. Edition nouvelle avec com-mentaire, publiee par Maurice Petit. pp. xxviii + 192. Paris 1907. (Recd. 13/3/07.) From the Publisher : A. Hermann. Robertson, P!ederick D.S. Practical agricultural chemistry. A manual of qualitative and quantitative analysis for agricultural students. pp. x+210. ill. London 1907. (Recd. 13/3/07.) From the Publishers : Messrs. Baillikre, Tindall, and Cox- Sommerfeldt, Ernst. Physikalische Kristallographie vom Stand-punkt der Strukturtbeorie. pp. vii + 132. ill. Leipzig 1907. (Recd. 13/3/07.) From the Publisher : C. H. Tauchnitz. Thorns, H. Ueber Mohnbau und Opiumgewinnung. pp. 60. ill. Berlin 1907. (Recd. 13/3/07.) 11. By Purcitccse. Deutsches Baderbuch, bearbeitet unter Mitwirkung des Kaiser- lichen Gesundheitsamtes.pp. [viii] + civ + 635. Leipzig 1907. (Recd. 20/3/07.) Tammann, G. Ueber die Beziehungen zwischen den inneren Kraften und Eigenschaften der Losungen. Ein Beitrag zur Theorie homogener Systeme. pp. viii + 184. Hamburg 1.907. (Recd. 20/3/07.} Tappeiner, H. v., und Jodlbauer, A. Die sensibilisierende Wirkung fluorescierender Substanzen. Gesammelte Untersuchungen uber die photodynamische Erscheinung. pp. viii + 210. ill. Leipzig 1907. (Recd. 20/3/0’7.) ERRATUM. 1907. P. 74, line 15 from top, for “ Cohen ” rend ‘ Cahen.” 94 At the next Ordinary Meeting on Thursday, April lSth, 1907, the following papers will be communicated : ‘‘The magnetic rotation of hexatriene, CH,:CH*CH:CH*CH:CH,, and its relationship to benzene and other aromatic compounds, also its refractive power.” By Sir W.H. Perkin. “ Aromatic azoimides. Part I. p-Hydroxyphenylazoimide.” By M. 0. Forster and H. F:. Fierz. “ The action of hydrogen peroxide on potassium cyanide.” By 0.Masson. ‘(The action of ethyl oxalate on thioacetanilide and its homologues.” By S. Ruhemann. ‘‘ Measurements of the velocities of saponification of the E-menthj 1 and I-bornyl esters of the stereoisomeric mandelic acids.” By A. McKenzie and H. B. Thompson. R. C1,AY AND SONS, LTD., BEEAD ST. HILL, E.C., 14x1)HCNGAY, SUP’LI’0I.K.
ISSN:0369-8718
DOI:10.1039/PL9072300081
出版商:RSC
年代:1907
数据来源: RSC
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