THE ANALYST.PURE ACIDS AND CHEMICALSFOR ANALYSIS.KNOWLES & PHILLIPS,47, MINORIES, E.C.PRICE LIST FORWARDED ON APPLICATION.N.B.-References as to quality and price kindly allowed by severalleading Analysts already supplied.TOWNSON AND MERCER,Wholesale and Export Dealers and Manufacturers of Chemical and Scientific Appara,tus,Graduated Instruments, and Pure Chemicals for Analysis, &c.8 9 , BISHOPSGATE STREET W I T H I N , LONDON.Sole Agents in England for Becker's ChemicalBrtlances. Illustrated Catalogue post free on receipt of 2s. 6d.LATELY PUBLISHED, Svo., 10s. 6d.The Practice of Commercial Organic Analysis.By ALFRED H. ALLEN, F.C.S.Lecturer on Chemistry at the She$eld School of Medicine.Vol. I.-C yanogen Compounds, Alcohols and their Derivatives, Phenols,Acids, &c." A volume which is in a great measure unique, and which every practical chemistwill find most useful."-Chemical News." There are few works where so much real practical information is condensed within360 pages."--Analyst.6 ' The book is got up in an extremely handy style for reading, and by the uBe ofdisplayed type reference from one paragraph to another, or to any particular thingwhich may be required, is rendered very easy. We think the volume will have anextensive sale, and are certain that there are few Analysts or Medical Officers of Healthwho will not find in it much information of a valuable kind."-Sanitary Record.J. and A. CHURCHILL, New Burlington StreetTHE ANALYST.THE AMGLO-AMERICAN TIN STAMPING COMPANY, LIMITED,STOUI%PORT, WORCESTERSHIRE.YANUFACTURERS OF IYPROVEDSEAMLESS, PLAIN, RETINNED, AND JAPANNED WARE.~ ~ -.STRAIGHTDEEP MILK PAN.DISH PAN.England producingAmerican and English Patterns of StampedWare by American Machinery. Also1877, for the Manufacture of WROUGHT-IRON MOmED 8o1e Licencees, under Letters Patent of Au uSt 7thENAMEhD WARE in the United Kingdom.WASH BASIN. D DEEPNG PAN.TEE ANGLO-AMERICAN ENAMELLED WARE is a KEW article of Enamelled Wrought-Iron Hollow-mare, differing fromsimilar articles manufactured in Europe in the tenacity with which the enamel clmgs to the iron upon which it is fused; in thebrilliancy of its glaze ; in the beauty of its ornamentation, due to the colouring oxide supplied by the iron body, which in theenamelling process is absorbed by the glaze and distributed through it in great variety of curious and attractive forms ; in thethinness of the enamel, whioh insures its elasticity, whereby it the better resists fracture ; in the ubsolute purity and harm-&acme88 of the enamel ingredients * in its perfect insolubility under any action of heat, acid, or Water, in culinary operations,which insures ITS ABSOLUTE 8AFE)m IN USE, as the following certificate w i l l testify :-[COPY] JOHNSON, MATTHEY & CO., Assayers and Melters to the Bank of England Her Majesty's Mint &o.Assay Offices and Ore Floors: Hatton Chwden Loridon E.C.CERTIFICATE OF ASSAY.kebruarykth, 1879.We examined the sample ENAMELLED PANS FOR EXAMINATION AND ANALYSIS, marked as under, and ilnd thefollowing to be the reoult :The pieces of enamel consist of a silicate of Soda, Alumina, and Lime ; entirely free from Antimony and Lead.Themamel, as set upon the pans, confirms our experiments with the sample of enamel itself received separately. The pans havebeen subjected to the action both of acetic aoid and mute mineral acids, which they resist perfectly. We consider, therefore,that 8s eqamelled ware it is thoroughly adapted for cuhinary and domestic purposes.For the Anglo-American Tin Stamping Company, Limited.JOHNSON MATTHEY & COThe Anglo-American Tin Stamping Co. will be glad to correspond with buyers regarding special sizes br patterns of goodfor their markets.Illuetrated Catalogue, Prices, and Terms furnished on application, or through any Merchant or Factor.Bxport Liverpool Agents, HENRY NASH & Co., 12 and 14, Tower Buildings North, Water Street.Export London Agents, BROOKER, DORE & Co., 2, Rood Lane, Penchurch Street;HARD OR SOFT WATER ?-THE PORTER4LARK PROCESSi For the Softening and Filtration of W&ar in large quantities, within small space, st amall a t .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 * (a) he c8um of imperfect cleansing ma pniification of and injury to linen and woollens in l a h r i e s -(c) The cause of the frightful waste of soap, soda, and other alkalies by which those injuries are'imparted and theIn County Asylums, Steam Laundries, and Manufactories * and for the Town Supply of Old and New Swindon and the BailwayWorks, the Porter-Clark Process is trlating hundreds of thousands of gallons per day.The filtration is exquisite, and everything arrested is removed daily.impurities retained.Patented by JOHN HENDERSON PORTER, C,E., 1 & 2, Tudor St,, Blackfriars, London, EX,THE SANITARY FLUID.ANTISEPTIC DISINFECTANT for Preventing Epidemics and Destroying InfectiousDiseases, as supplied to the €Loyal Arsenal, Woolwich. This Fluid is a powerful Antiseptic, Disin-fectant and Deodoriser, and from its harmlessness may be applied in any direction without any ill-effects,and with the best possible results.THE " PRINCESS ALICE" CALAMITY.-The Sanitary Fluid was used at the Woolwich Dock-yard for Disinfecting over 600 bodies. The Clothing taken from the Bodies and over 500 Sheets werealso Disinfected in large Cauldrons.Also the Building, Yards, &c., giving the greatest satisfaction to theDockyard and Parish Authorities. The work was carried gut under the superintendence of Mi. HABMER.SIR,-I beg to inform you thatI consider your Disinfectant, as applied in the Dockyard, both to buildings and clothing, after theremoval of the dead from the premises, very efficacious, and, from its cleanliness and absence of smell,very superior to the Disinfectants in the form of powder generally used.-Faithfully youm, J. T .BARRINGTON, Assistant Commissary General. M i . Harmer, Gtratford, E."For Asylums, Schools, Sanitary Authorities, Railway and Dock Companies, Workhouses, Shipping, &c.Price 1s. per bottle ; 3s. 6d. per gallon ; large quantities at a cheaper rate, of the Sole Manufacturer,W. J. HARMER, West Ham Lane, Stratford, E., or through Agents.The MAGIC FLUID for General Household Purposes, price 1s. 6d. per gallon. Write for PamphletTESTIMONIAL.--" H.M. Dockyard, Woolwich, September 23,1878.with Testimonials, &c. NON-POISONOUS.Printed for the Proprietors by JOHN DAVIS, Old Kent Road, S.E. ; and published by BAILLJ~RE, TINDU & COX, KingWilliam Street, Strand, W.C., to whom all communications should be addreeeed