ADVERTISEMENTS. 



LEAD WOOL 



(RHG. TRADE MARK) 



FOR PIPE JOINTING. 



MR. NORTON H. HUMPHRYS, A.M.I.C.E., F.C.S., writes: 



" The advantage of cold lead in wet weather is obvious, as ' Lead Wool' can 

 be set up even under water. It also has the advantage of doing away with the 

 mainlayers' fire basket, which is a great annoyance to inhabitants or passers-bj 

 in windy weather when the smoke and dust blow about." 



The Gas World, Jan. 7, 1911. 



STRONGER & CHEAPER 



THAN THE RUN LEAD JOINT. 



Full particulars from 



THE LEAD WOOL CO., LTD., SNODLAND, KENT. 



Telephone: 199 Snodland. Telegrams: " Strength Snodland." 

 A PRACTICAL WORK. 



THE MANUFACTURE OF SULPHATE OF AMMONIA. 



BY 



GASCOIGNE T. CALVERT. 



(Late Works Manager of the Nechells Chemical Works, Birmingham.) 

 Demy 8vo, with about 100 illustrations, price 75. 6d. 



A book written by a practical man for the use of practical men. 



Contains full working details as to the Manufacture of Sulphate of 

 Ammonia. Designed to meet the requirements of both large and 

 small makers of Sulphate. 



SYNOPSIS OF CHAPTERS. 



Sulphate of Ammonia : Its Composition and Analysis. 



The Raw Materials : Ammoniacal Liquor, Sulphuric Acid and Lime. 



Plant required for the Manufacture of Sulphate of Ammonia : 

 General Description Supply of Ammoniacal Liquor Tachometer 

 Superheaters Stills Liming Apparatus Waste Liquor Valves Cool- 

 ing Arrangements, etc. Saturators Drying, Storing, Packing, etc. 

 The Waste Gases, etc. 



Starting, Working and Stopping the Plant. 



Miscellaneous : Alkali, etc., Works Regulation Act, 1906. 



Sulphate of Ammonia Manufacture for Small Gasworks. 



JOHN ALLAN & Co., "The Gas World" Offices, 8. Bouverie Street, B.C. 



