INCLUDING THE PROCEEDISGS OFTHE “SOCIETY OF PUBLIC ANALYSTS.”A Monthly Journal for the information of those interested in the purity of Foodand Drugs, and in general Analytical and Microscopical Research.[PRICE Gd, O r to Suhso+ibcrs 5s. 3 % ~ Bditetd G. 1%’. WIGNIIII,mmum. PostFrce. 3 and JUNE, 1870. [No* 39’1 by J. hiunI:.A. H. ALLEN, F.C.S.A. D U P R ~ , PH.D., P.R.S., F.C.S.C . HEISCH, F.C.S.CONTENTS.J. MUTER, YH.I)., MA., F.C.S.G. W. WIGNER, F.C.S.SOCIETY OF PUBLIC ANALYSTS’ MEETING ............ DRUGS ACT AWENDMENT BILL ..COEXESPONDERCE .................................. ..................................LAW RIVOETS NEN- NTTHOD F01i EXAXINATION OF BUTTER. By ...................................... By A. H. Allen, F.C.S.. ............. -. ............ NOTES ON ANALYTICAL EXAMINATION OF TINCTURES.C.A. CAMERON, M.D.OTTO HEHNER, F.C.S.Ur. Koettstorfer ................................ 106 NOTES OF THE NONTH .............................NEN NETHOD OF DISTINGUISHING BUTTER FROM I CHEllrICAL PATEXTS ................................OTHER FATS. Ey W. G. Crook.. ................ 111 1300~s RECZIVED ..................................J. FALCONER KING, F.C.S.C. H. PIESSE, F.C.S.....................INSTITUTE OF CHEMISTRY ......................... 112 I1115116117118119120120FiNEST BERLINPORCELAIN.-BOHEMIANGLASS.-GRADUATEDINS T RU M E N TS. -H OFMA N N’SAPPARATUS.ALSOELECTRICAL,GALVANIC,PN EUMA TICA PPA RA TUS,&c., &c.ScientificApparatus.IPureChemicals.COMPLETESETS OFQUALl TATIVE,QUA N T I TA TIVE,VOLUMETRIC,AND ASSAYAPPARATUS.-PLA T TN E R’SBLOWPIPE. -EGGERTZCARBON. -ANDTHOMPSON’SFUEL TESTil PPARATUS.Vv-i-fOLEShLE: ASD EXPOiIT.Makers of Apparatus to the Laboratories of the Inland- Revenue, Royal Arsenal, Royal MilitaryAcademy, Science Schools, India Office, South Kensington, Bcc.Catatogzces and Estimates sent o n application, enclosing Business C a d foy Terms, dcTHE ANALYST.WORKS BY DRm MUTER, M.A.9 FmGmSm,President of the Society of Public Analysts ; Public Analyst for Lambeth, Southwark,Bermondsey, Rotherhithe, Newington, and Wandsworth,Now ready, demy Svo, with copious Tables, price 7s. 6d.N INTRODUCTION TO ANALYTICAL CHEMISTRY. For Medical A and Pharmaceutical Students.Now ready, royal Svo, Second Edition, cloth, with Analytical Tables and copious Index, price 10s.6d.N INTRODUCTION TO PHARMACEUTICAL AND NEDICAL A CHEMISTY, Theoretical and Practical.processes published only a few months since being described in their proper places.”-Chemical News.been published.”-PubZic Health.( ( The book is m e of B very useful and original kind, and is brought up to the latest date, tests and6 6 Amongst the best chemiaal treatises of the day, and in many respects superior to any that have yetThird Edition, 600 pp., Svo. Price 12s. 6d.KEY TO ORGANIC MATERIA MEDICA, Analytical Chemists will A find this a concise and yet complete book of reference for the isolation and examination of theactive principles of drugs. Special appendix on the microscopic characters of the starches in food anddrugs. Copious index and qualitative courses or resins, &c.LONDON : BAILLIERE, TINDALL & Cox, 20, King William Street, Strand, and all Booksellers.NOW READY, crown Svo, cloth, 12s.6d.PRACTICAL CHEMISTRY (A Manual of).F.C.S., Public Analyst for the County of Devon.Butter, Cheese ; Tea, Coffee, Cocoa ; Alcoholic Liquids ; Condiments.-Organic or Inorganic. With Tables and Diagrams.of rare and valuable information.”-Chemist uizd Druggist.By A. WYNTER BLYTH, M.R.C.S.,PART I: ANALYSIS OF Foom-Flour, Bread, Milk,PART I1 : DETECTION OF POISOXS‘‘ A work of great value-contains a gast amountLONDON : CHARLES GRIFFIN & Co., Stationers’ Hall Court.THE ANALYST, Vols.I. & III.--(Vol. 11. out of Print,)INCLUDING the Proceedings of the Society of Public Analysts, and embracing alarge number of Original Papers on every branch of Chemical Analysis, with a comprehensiveIndex of Subjects and Names. Price, bound in cloth, 7s. ; in half-calf, 9s.Edited (under the direction of the Committee of Publication) by G. W. WIGNER, F.C.S., andJ. MUTER, Ph.D., F,C.S.Published by BAILLI~RE, TINDALL & Cox, King William Street, Strand, W.C.E. C E T T L & CO.,MANUFACTURERS O F BAROMXTERS, THERMOMETERS, CHEMICAL ANDPHILOSOPHICAL APPARATUS OF EVERY DESCRIPTION.Dr. Franklin’s Apparatus for Analysis of Water. Dr. McLeod’s Modification for Water and Gas.Professor Bischof’s Apparatus for Evaporation of Water.Dr. Sprengel’s Mercurial Air Pumps of everyDrs. Russell and West’s Apparatus for Estimating Urea in Urine. Dr. Blaokley’s Apparatug for Ditto,11 and 31, Brooke Street, Holborn, London, Wholesale and for Exportation, and Rose CottageGlass Works, Pratt Street, Lambeth.form. Water Pumps for quick filtration. Dr. Mill’s Colorimeter.REGISTERED ENAMEL BACK URINE SEDIMENT TEST TUBES.HARD OR SOFT WATER ?-THE PORTER-CLARK PROCESSiFor the Softening and Filtration of TVater in large quantities, within small space, at small cost.The removal of the carbonates of lime and magnesia and iron from hard waters is the removal of(a) The cause of enormous waste of fuel occasioned by incrustation of steam boilers and pipes ;( b ) The cause of imperfect cleansing and purification of and injury to linen and woollens in laundries - (c) The cause of the frightful waste of soap, soda, and other alkalies by which those injuries are’imparted and theimpurities retained.In County Asylums, Steam Laundries, and Manufactories * and for the Town Supply of Old and New Swindon and the RailwayWorks, the PorteraClark Process is trlating hundreds of thousands of gallons per day.The atration is exquisite, and everything arrested is removed daily,Patented by JOHN HENDERSON PORTER, C,E,, 1 & 2, Tudor St,, Blackfrim, London, E,C