|
1. |
Abstracts of the Proceedings of the Chemical Society, Vol. 4, No. 56 |
|
Proceedings of the Chemical Society, London,
Volume 4,
Issue 56,
1888,
Page 75-86
Preview
|
PDF (800KB)
|
|
摘要:
ABSTRACTS OF THE PROCEEDINGS OP THE CHEMICAL SOCIETY. No. 56. Session 1888-89. June 21st, 1888. Mr. W. Crookes, F.R.S., President, in the Chair. Messrs. George Embrey and Albert L. Guiterman, Ph.D., were formally admitted Fellows of the Society. Certificates were read for the first time in favour of Messrs. John Burke Fairley, 2, Sidney Villas, Lower Eglinton Road, Shooter’s Hill; A. Alexander Ramsay, Auckland, New Zealand; C. Heinrich Trinks, 117, King Henry’s Road, N.W. The following were elected Fellows of the Society :-Messrs. John Alexander, Charles Bradshaw, Lewis Edmunds, William Humphrey Gibson, Joseph Henry Maiden, Henry Alexander Miers, M.A.,Frank Mousley, James H. Rymer Paterson, George Woodyatt Procter, Herbert W. Seely. The following papers were read :-48.‘‘ Chlorofumaric and Chloromaleic Acids and their Magnetic Rotatory Powers.” By W. H. Perkin, Ph.D., F.R.S. The author has further studied the action of phosphorus penta- chloride on tartaric acid, first examined by Mr. Duppa and himself in 1861. The main product is the chloride of ohlorofurnuric acid, not chloromaleic chloride as was formerly supposed. In the paper, the properties of the chloride are described, and also those of the acid and of its acid potassium, ammonium and ethylic salts. On treat- ment with ammonia the ethylic salt is first converted into the ethylic salt of chlorofnmaraniic acid, CO(NH,)-CH~CCl*CO,Et, a substance already described by Claus and Voeller as a maleic compound ; on further treatment with ammonia, amidofumaramide is produced ; this crystallises in pale yellow needles, and decomposes when heated, b no definite fusing point being observable.Claus and Voeller operating in the same manner have, however, obtained a substance which, although of the same composition, crystallises in colourless scales melting at 122 ’. On heating a mixture of chlorofurnaric acid and chlorofumaric chloride, chloromaleic anhydride is obtained : this substance is dj- morphous, being obtainable in hard crystals melting at 34*5”,and as a solid which melts just below 0”. Chloromaleic acid and a number of its salts are fully described in the paper; like the maleates the chloromaleates yield a brown-red coloration with ferric salts, while the chlorofumarates like the fumnrates afford a buff precipitate with ferric salts. The magnetic rotatory powers of a number of the compounds described are recorded in the paper.49. “ Combustion by means of Chromic Anhydride.” By C. F. Cross and E. J. Revan. Ladenburg in 1865 described a method of ultimate analysis of carbon compounds, consisting in heating with iodic acid and sul-phuric acid in sealed tubes; the oxidation was found complete for a, satisfactory variety of substances, and the experimental numbers obtained showed the process to be available as a laboratory method Qf estimating carbon and hydrogen. The authors have investigated the action of chromic anhydride in presence of sulphuric acid on carbon compounds, Ladenburg aen- tions this “combustion mixture,” but regards it as unavailable for quantitative determinations on account of the CrOs decomposing with evolution of oxygen.This, however, is shown by the author’s experi- ments to take place to so small an extent under the conditionR as to time and temperature of a combustion that it may be neglected. The action of the mixture has been investigated under atmospheric pressure in vessels connected with a gas collecting and measuring apparatus. The carbon of the celluloses and carbohydrates is entirely converted into gaseous products. Some typical benzenoid compounds have also been investigated, and the reaults indicate that complete oxidation may be effected. The monobasic acids of the fatty series on the other hand are not completely resolved, and tho results are consequentiy variable.Amide and imide nitrogen prevent complete oxidation ; ope of the causeB probably being that urea is not attacked by the mixture. Compounds containing negative radicles such as C1, Br, S and NOzhave not been investigated. DiscussIoN. Mr. A. H. ALLENsaid that he had been in the habit for years of 77 using chromic anhydride for oxidising carbon in steel, but he had found that some carbon dioxide was always evolved when pure sulphuric acid and the commercial anhydride were used; he therefore prepared the solution of the anhydride from fused lead chromate and sulphuric acid. 50. ''Metaxylenesulphonic Acids." By G. T. Moody, D.Sc. According to Jacobsen, metaxylene yields two sulphonic acids ; the 1 : 3 :4modification is the chief product, the 1 : 2 :3 modification being also formed, and in larger quantity when the temperature during sulphonation is low.The primary object the author had in view was to ascertain if the 1: 2 : 3 acid was convertible by isomeric change into the isomeride, the investigation being one of a series which are being carried on in the Central Institution laboratory for reasons briefly stated by Dr. Armstrong in Abstract No. 99,1887. The author arrives at the oonclusion that the contradiotory results obtained by Jacobsen, Remsen, and others on sulphonating meta- xylene are to be explained by the fact that in their investigations they did not use a pure hydrooarbon.Metaxylenesulphonic acid, obtained by sulphonating crude metaxylene, may be freed from para-xylenesulphonic acid and other impurities, by repeatedly crystallising it from sulpburic acid diluted with one-third its weight of water in the manner described by Jacobsen, who, however, clearly did not carry the purification far enough. The pure sodium salt differs greatly from the description af it given by Jacnbsen (Berichte, 1878, 17). It crystallises in beautiful tables belonging in all probability to the anorthic system, and contains one molecule of water of crystal-lisation. When hydrolysed the pure sodium salt yields a hydrocarbon which on sulphonation with chlorosulphonic or sulphric acid gives unZy one sulphonic acid, the sulphonamide prepared from which melts at 137".Jacobsen's sulphonamide melting at 95-96" is not a derivative of metaxylene at all, but a mixture containing R considerable quantity of paraxylenesulphonamide ; the solid xylenol obtained from it by Jacobsen being identical with paraxylenol, which he describes in the same paper. Dibromometaxylenesulphonic acid, on reduction with zinc-dust and sodium hydroxide, yields a sulphonic acid the barium salt of which crystallises in large prisms, the sulphochloride in prisms melting at 39", and the sulpbonamide in slender, brittle needles melting at 113". Jacobsen and Weinberg obtained this sulphonamide in an impure condition (Berichte, 1878, 1534), and regarded it as identical with that melting at, 95-96" obtained by Jacobsen on sulphonating "meta-xylene " with sulphuric acid.If the sulphonic acid giving the sulphonamide melting at 113" be heated at loo", isomeric change readily occurs, and the acid cor-responding to the amide melting at 137" is formed. The author proposes to closely study the derivatives oE the acid yielding the amid6 melting at 11.3". 52. '' The Formation of Isomeric Toluenesulphonic Acids." By'Hugh Gordon, B.A. The object which the author has had in view was similar to that by which trhe author of the previous communication was guided. It is well known that when toluene is sulphonated at low temperatures a large proportion of ortho-acid is obtained, whereas if sulphonatioii be effected at a temperature near the boiling point of toluene the para- acid is the almost exclusive product ; it is obviously important, if possible, to determine whether or no the para-acid is formed from the ortho-acid by simple isomeric change.The author fjnds that toluene- orthosulphonic acid (hydrated) is not affected by heating at loo", but by somewhat prolonged heating at 140-150" it is converted into the para-acid ; and inasmuch as this temperature is far above that at which toluene boils, it appears improbable that the ortho-acid becomes hydrolysed and that the para-acid is formed by resulphonation of the toluene at a high temperature. The results as yet obtained are regarded, however, as incomplete, an extended investigation of the behaviour of the various sulphonic acids both of toluene and of toluene-derivatives being in progress. 52.''A New Method for the Preparation of Mixed Tertiary Phos-phines." By Norman Collie, Ph.D. The author has already called attention to the way in which when heated compound phosphonium chlorides decompose into the chlor- hydride of the tertiary phosphine and an olefine. He has since used this as a method for the preparation of mixed tertiary phosphines. Triethylphosphins has been united with methyl, propyl, amyl and benzyl chlorides respectively ; all these cornpound phosphonium chlorides when heated decompose in a manner similar to the tetrethyl- phosphonium chloride, yielding ethylene and chlorhydrides of the tertiary phosphines. The tertiary phosphines were prepared from the chlorhydride by the action of caustic soda, In this manner the following phosphines have been obtained :-Methyldiethylphosphine, dimethylethylphos-phine, propyldiethylphosphine, amyldicthylphosphine, benzyldiethyl- phosphine and dibenzylethylphosphine.79 53. “Some Interactioiis of the Halogen Hydrides.” By G. H. Bailey and G. J. Fowler. The authors have found that when phosphorus pentoxide is exposed to hydrogen chloride gas at ordinary temperatures, large quantities of the gas are taken up by it, amounting to nearly a quarter of R litre per gram of the pentoxide, the gas and the pentoxide interacting chemically: 2P205+ 3HC1 = POCI, + 3HP0,. A similar interaction occurs with hydrogen bromide, but, none with hydrogen iodide. They have also observed that though hydrogen chloride has no action on mercury, yet if mixed with oxygen it readily attacks the mercury, forming an oxychloride, Hg20Cl,.Hg0, action taking place even in the dark.With hydrogen bromide gas and oxygen the interaction is more rapid, but whereas in the case of the chloride the whole of the hydrogen is oxidised to water, in the case of the bromide a large proportion remains uncombined. Hydrogen iodide gas forms with mercury mercurous iodide or mercuric iodide, according as t’he mercury or the iodide is in excess. 54. “Remarks on the Paper of Drs. Japp and Klingemann on the Constitution of certain so-called Nixed Azo-compo~nds.~’ By Prof. Vie t or Meyer. From a note on page 523 of the above-named article (Claem.Xoc. Trans., 1888), I see that Messrs. Japp and Klingemann regard my “ Nachschrift,” in the Berichte (1888, p, IS), as a claim of priority on my part. On re-pemsing the article I sce that the wording, quite unintentionally on my part, permits of such a reading. I therefore hasten to explain that the results there referred to were arrived at by Messrs. Japp and Klingemann and myself independectly, and that without doubt they obtained theirs ere I did mine. Nothing is furhher from my thoughts than the desire to detract from the merits of these workers, especially in a field which they have enlarged by such valuable and successful investigations. 55. “ The Action of Potassium 011 Tetralkylammonium Iodides.” By C. M. Thompson and J.T. Cundall. According to Weyl, if potassium in solution in liquid ammonia act on ammonium chloride, ammonium is produced and dissolves in the ammonia, forming a blue solution ; this statement lacks confirma- tion, and has even been contradicted. In the hope of obtaining more decisive results, the authors have substituted tetramethyl- and phenyl- trimethyl-ammonium iodide for ammonium chloride, but unsuccess- fully. The greater part of the former was unchanged, a portion only b2 being acted on by the potassium giving potassium iodide, ethane and trimethylamine ; from the latter, potassium iodide, dimethylaniline and trimethylamine were obt,ained. 56. “ The Solubility of Isomeric Organic Compounds in Relation to their Fusibility.’’ By Thomas Carnelley, D.Sc., and Andrew Thomson, D.Sc., M.A., University College, Dundee. Seven years ago (Phil.Mag. [5], 13, 180) one of the amthors showed that the fusibility and solubility of isomeric compounds were very closely related to one another, so that of two or more isomeric bodies, that dissolves the most easily which has the lowest melting point and in which the atomic arrangement is the least symmetrical. At that time the investigation had included only a comparatively small number (58) of compounds. The authors have now extended the investigation, so as to include all isomeric sets of carbon com- pounds whatever. Their data have been obtained partly from litera- ture and paytly as the results of their own determinations.The following are their general conclusioiis :-(1.) For any series of isomeric carbon componnds the order of solubility is the same as the order of fusibility, i.e., the most fusible compound is also the most soluble. This rule has been applied in 1778 cases of which 1755 accord with the rule, including all kinds of isomers, from the most simple to the most complicated. There are only 23 exceptions, and a large proportion of these is of a very doubtful character. (2.) The order of solubility of the corresponding salts of any series of isomeric organic acids is the same as that of the acids themselves, i.e., the salts of the more soluble and more fusible acids are also more easily soluble than the corresponding salts of the less soluble and less fusible acids; and if fusible more easily fusible, but the melting points of most organic salts cannot be determined because they decom- pose before fusion.To this rule there ape five exceptions out of 143 cases in which the rule can be applied, and as regards at least three of these it is very doubtful whether they are real exceptions. (3.) The order of solubility of two or more isomeric compounds is independent of the nature of the solvent. This rale can be applied in no less than 666 cases, and among these there is not a single exception. The truth of the rule has also been proved more particularly in the case of meta- and para-nitraniline, the solubility of each of which in 13 different solvents has been carefully deter- mined.(4.) The ratio of the solubility of twol isomers in any solvent is constant., and is independent of the nature of the solvent; this has been proved as yet only in the case of the meta- and para-nitranilines in respect of 13 different and very varied solvents. The extremely close and intimate relation of solubility to fusibility, however, is proved not only by the very large number of cases of isomeric compounds which the authors have examined (nearly 2000), but also by the relative fusibility and solubility of the various allotropic modifications of the same element (e.g., P, S (?),Se), and of mixtures of organic compounds (e.g., solid paraffins), and of inorganic salts (e.g., sodium and potassium nitrates), in all of which it is pointed out that the order of solubility is the same as the order of fusibility, and that this order is independent of the nature of the solvent.The curve of the solubility of mixtures of sodium and potassium nitrates in various proportions is very striking. Starting with pure sodium nitrate, the solubility increases and the curre rapidly falls as the percentage of NaNO, diminishes and that of KNO, increases, until the proportion of the latter amounts to about 20 per cent.; the solubility then remains constant and the curve becomes a horizontal line until the proportion of the potassium salt reaches about 40 per cent., after which the solubility diminishes and the curve rapidly rises until pure KNO, is reached. The curve of fusibility falls rapidly from pure NaNO,, until the latter amounts to 50 per cent., after which it remains constant until the KNOs equals 60 per cent., and then rises rapidly until pure KNOj is reached.57. “Notes on some Compounds of Chromium.” By Sydney Lupton, M.A. The determination of the atomic weight of chromium has occupied the attention of many chemists, but from a variety of causes the results obtained are far from satisfactory. In some cases single experiments are relied on, and in others proper attention has not been paid to the solubility of silver chloride in solutions of chromic chlo- ride, the great difficulty of drying chromic sulphate wit,hout decom- position and of completely decomposing it by heat, the liability of barium chromate to carry down other salts, or to be carried down by barium sulphate.Hence the true atomic weight cannot be considered to be determined to within about 1per cent. In fact Clarke, placing apparently great reliance on a single experiment of Siewert’s, takes Cr = 52.01 ; while Meyer and Seubert, giving greater weight to the experiments of Berlin, assume Cr = 52.45, which is practically the value preferred by Fresenius. The following experiments were made with the object of suggesting a method for the determination of the atomic weight of chromium free from the defects inherent in all the methods which have hitherto been used. Incidentally a few old results have been either confirmed or rendered doubtful. Potassium Dichromate.-The density of this salt was found by Thomson to be 1.98, which is copied into such authorities as Wurtz's Dictionnaire and Biedermnnn's Che?iziker Kalendar, 1884.Karsten found 2.6; Miller's Elenzeiats gives 2.62; Schroder found about 2.7. The density of 'some small crystals of the twice recrystallised salt was determined in benzene, the air being removed by a small hand-pump ; it was found to be (i) 2.63, (ii) 2.67. Anamonizcm Dichromate.-The density is given by Clarke as 2-151. Three experiments in benzene, the air being removed by a small pump, gave (i) 2.16, (ii) 2.18, (iii) 2.75, and one in chloroform (iv), 2.18. 100 grams of water dissolve- At 7.0" about 23 grams of the salt ; at 60" about 82 grams. 99,, 10.0 ,, 24 94 ,, 11.5 ,, 9,,, 16.5 ,, 28 107 ,, 173 ., ,, 18.0 ,, 33 99 The solution boils at 107" C.; it density is 1.12 at lo", and 1.158 at 18°C. The finely powdered salt is easily dried at 110" in the air-bath. Darby states (Jour. Chem. Xoc., i, 20) that ammonium dichromate decomposes suddenly when heated to 200". A small quantity of the dry powdered salt was heated in a thin test-tube, with a thermometey inside placed in a paraffin bath. Sudden decomposition took place at (i), 2.28" C. ; (ii), 230" C. Since the composition of the salt has been placed beyond doubt by Siewert (Jahresb.,1862, l48), the ignition of ammonium dichromate and the determination of the chromic oxide left seems in theory to afford an unexceptionable method of determining the atomic weight ; but the difficulty of avoiding loss of oxide by the sudden rush of the gas is very great.Darby used tubes plugged with cotton-wool, Richmond and Abel tubes plugged with asbestos, and I have tried mixing the salt with a large excess of ignited silica without success. Hence it seemed advisable to reduce the salt previous to ignition to obtain the oxide. The reduction with hydrogen dioxide is rather tedious, and it is somewhat difficult to obtain a solution of the dioxide which leaves no residue on ignition. A solution of sulphur dioxide was therefore used as the reducing agent. 0.1539 gram of ammonium dichromate was dissolved, reduced by sulphur dioxide, evaporated, and the residue heated for two hours at 200°, when the residue weighed 0.3228 gram, mhich was reduced to 0.3218 gram by further heating during an hour and a half; this residue nea.rly corresponds to the formula Cr23S047H20.After long-continued heating over a good 83 argand, the residue consisted of a mixture of sulphate and oxide, which, when heated over a hunsen to bright redness for two and a half hours, gave a residue weighing 0.1021 gram, which remained unchanged after heating for another hour. Hence, one part of ammonium dichromate left 0.6634 part of residue, the formula of which would be about Cr,3S0J5Cr,03, instead of 0.60 required for Cr,03. A second experiment gave similar results, and even prolonged ignition over a gas blowpipe failed to produce the mass to oxide. This difficulty in drying chromic sulphate, and in decomposing it by heat, explains the high value Cr = 53.563 obtained by Moberg by the ignition of chromic sulphate and of ammonio-chromic alum. Reduc-tim with (i) hydrogen oxalate, (ii) alcohol and hydrogen nitrate, (iii) alcohol and hydrogen chloride is liable to occasion loss by spitting. Mercumzcs Chromates.-These salts have been investigated by Vauquelin, Godon, Gmelin, Darby and Treese, but the results ob-tained are not very concordant. On pouring potassium dichromate into mercurous nitrate slightly acidulated with nitric acid, a heavy orange-red precipitate falls, Gmelin states that on heating this salt, Godon obtained 0.126 part, and he himself 0.1232 part of oxide.Oce part of Hg,0*4Hg,Cr04when heated would leave about 0.1232 part of oxide.According to Darby, the precipitate is of the composition Hg,0.3Hg,Cr04,but he does not state that he himself analysedit. It is slightly soluble in water, and easily soluble in hot dilute nitric acid from which it separates on cooling as the normal salt HgzCrOa. From one part of this salt Darby obtained by ignition (i) 0.1463, (ii) 0.1488, (iii) 0.1479 part of chromic acid. Wurtz’ Dict., 1, 896, assigns to Godon and Gmelin’s salt tibe formula Hg,0Hg,Cr04,and Treese (2eit.f. Chenzie [2], 6, 30), states that the salt thus obtained is normal and not decomposed by water: 1.7234 gram of mercurous chromate obtained from Messrs. Hopkin and Williams were heated over a bunsen burner until a dull green residue weighing 0.1943 gram was left. The ratio is 1: 0.1127, and a second experiment, in which a slight loss occurred, gave 1: 0.1118.This corresponds fairly to the salt ITg,O*~Hg,CrO~ containing a little impurity or traces of meiwwous oxide. A hot solution of potassium dichromate was poured into 8 hot solution of mercurous nitrate slightly acidulated with hydrogen nitrate. The fiae heavy orange precipitate was washed, dried on the water-bath, and heated at 120”C., until it ceased to lose weight. Four experiments on the ignition of this salt gape the ratios :-(i.) 1 : 0.1523 (iii.) 1 : 0.1516 (ii,) 1 : 0.1517 (iv.) 1. : Os1510 84 This powder then appears to be normal mercurous chromate coil- taining a small proportion of either mercuric chromate or mercurous dichromate. A quantity of it was boiled for some time with dilute nitric acid and the undissolved residue was washed and dried.1-5525 gram left on ignit’ion0.2294 gram of oxide, corresponding to the ratio 1:0.1477. Hence the undissolved residue seems to be normal mercurous chromate, Hg,CrO,. In conclusion, two methods for the determination of the atomic weight of chromium seem to suggest themselvcs :-1st. The reduction of ammonium dichromate at a low temperature by a weak solution of hydrogen oxalate, 01’of some similar reducing agent, and the determination of the chromic oxide left on ignition. 2nd. The ignition of normal mercurous chromate and determination of the chromic oxide. In the first case the required atomic weights are well known, but the purification of the dichromate is tedious, and the reducing agent causes additional chance of error.In the second case the chromate is more easily purified, but the results will be affected by the uncertainty still attaching to the atomic weight of mercury. 58. “ The Estimation of Alumina and Free Sulphuric Acid in Alum Cake and Sulphate of Alumina.)’ By Rowland Williams. Thenutlior recommends Chancel’s method of estimating alumina by boiling with sodium thiosulphate (Watts’ Dictionary, 1, 155) as more accurate and expeditious than the ammonia process. In support he quotes the following results :-‘‘Ammonia ” “ Thiosulphate ” Theory.method. method. Alums (pure). Potash alum.. .......... 11-01 1096 Ammonia alum .........11-50 $1-24 Alum Cakes. No. 1sample .......... 12-94 12 -66 No. 2 ............ 12*34 12 -21 No. 3 ............ 12.93 12 -42 SuZphates of Alumiwa. No. 1sample ........... 12 95 12 -75 KO.2 ............. 13-51 13-21 No. 3 ), ........... 13-33 13 -12 No. 4 ............. 14.62 14 *4,1 No. 5 ............. 15-11 15 ‘01 No. 6 ............. 14.81 14.68 85 The estimation of the free acid in alum cake, &c., is best eflecfed by the following process :-300 grains of the sample are weighed into a stoppered bottle, and 1200 grains measure of strong alcohol added, the contents of the bottle being frequently shaken, and the digestion allowed toproceed all night. The next morning the alcohol is filtered off,and 800 grains measure of the filtrate (equal to 200 grains of the sample) titrated with decinornial caustic soda.Experiment shows that the alcohol does not extract other matters besides sulphuric acid which are liable to affect the result. To further test the accuracy of the method, ordinary sulphat,e of alumina was freed from sulphuric acid by washing with alcohol, and known amounts of acid were then added, and the amount estimated by the process described ;the results were as follows :-Percentages of Free Sulphuric Acid. No. 1. No. 2. No. 3. No. 4. No. 5. Added ............. 0 *73 1 '22 0.98 0-49 0 -59 Found ............. 0.69 1 -19 0 '96 0 :44 0 *54 ADDITIONS TO THE LIBRARY. I. Doizations, Minerals of New South Wales.By A. Liversidge, London 1888 From the Author. Argentiferous Lead Smelting at Leadville, By A. Guyard. (Extract from U.S. Geological Survey, Monograph XIT.) From F. D. Emmons, Esq. An Elementary Text-Book of Practical Metallurgy. By A. R. Gower. London 1888. From the Publishers. Nature's Hygiene. By C. T. Kingzett. Third edition. London 1888. Manual of Practical Assaying. By J. Mit'chell, edited by W. Crookes. 6th Edition, London 1888. Prom the Editor. Elementary Text-Book of Practical Metallurgy. By A. R. Gower, London 1888. From the Author. 11. By Purchase. I tesori sottermiiei dell' Italia. Per G. Jervis. 3 Tomi. Rorna, Torino, Firenze 1873-1881. Abriss der chemischen Technologie mit besonderer Riicksicht anf Statistik und Preisverh8ltnisse.Von C. Heinzerting. Cassel and Berlin 1888. Muspratt’s Chemie in Anwendnng auf Kunste und Gewerbe, frei bearbeitet. Von F. Stohmann and B. Kerl. Vierte Adage. Erster Band. Braunschweig 18S8. A Text-Book of Human Physiology, including Histology and Microscopical Anatomy ; with special reference to the requirements of Practical Medicine, By L. Landois. Translated from the fifth German edition, with additions by W. Stirling. Two vols. London 1886. The Gas Engineer’s Chemical Manual. By J. A. Wanklyn. Second edition. London 1887. Jahrbuch fur Elektrotechnik fir das Jahr 1887. Herausgegeben von G. Krebs and C. Grawinkel. Heft I. Halle a. S. 1888. Notes on Qualitative Analysis, Concise and Explanatory.By H. J. H. Fenton. Cambridge 1888. Factoren-Tabellen. Von J. Dos s. e. Silva. Braunschweig 1887. Lavoisier, 1743-1 794, d’apds sa correspondame, ses manuscrits, ses papiers de famille, et d’antres documents inkdits. Par E. Grimaux. Paris 1888. Asbestos, its Production and Use. By R. H. Jones. London 1888. Applications of Dynamics to Physics and Chemistry. By J. J. Thomson, Londop 1888. Soaps and Candles. Edited by J. Cameron, London 1888. La constitution des alcaloides v6gbtaux. Par A. Pictet, Paris 1888. Die Fabrikation von chlorsaurem Kali und anderen Chloraten. Von K. W. Jurisch, Berlin 1888. ITARRISON AND SONS, PRINTERS IN ORDINARY TO HEE MAJESTY, BT. MARTIN’S LANE.
ISSN:0369-8718
DOI:10.1039/PL8880400075
出版商:RSC
年代:1888
数据来源: RSC
|
|