ON THE ESTIMATION OF POTASH AND PHOSPHORIC ACID. 27 



J. Campbell BEO^yN, D.Sc. Professor at Infirmary School of Medicine, 



Liverpool, Public Analyst for Liverpool, &c. 

 Chas. F. BtJRNARD, of Mossrs. Burnard, Slack, & Alger. 

 CnAS. A. Cameron, M.D. Analyst to lioyal Agricultural Society of Ireland, 



Public Analyst for DubHn, &c. 

 Jn. Cammace. Analyst to Bridgewater Chemical Works, St. Helens. 

 A. H. Church, M.A. Professor at Royal Agricultural College, Cirencester. 

 W. M. Cowan. Public Analyst for Greenock. 

 John Cox. Chemist to Nottingham MiUs Manure Company. 

 V. Cetise. Chemist to Messrs. E. Packard & Co., Ipswich. 

 Thomas Faieley. Analyst to the Yorkshire Agricultural Society, Public 



Analyst for Leeds. 

 W. Flight, D.Sc. Assistant Examiner in Chemistry, London University. 

 — FsANZ, Ph.D. Chief Manager, United Chemical Works, Leopoldshall. 

 C. R. Fresenius, Ph.D. &c. Wiesbaden. 



W. Galbeaith. Late Chemist to the Phospho-Guano Company, Liverpool. 

 W. A. Hamlet. Analyst to the Peruvian Government Guano Company Agency. 

 J. Hughes. Analyst to Lawes's Chemical Manure Company, London. 

 H. JouLiE. Paris. 

 Alfred Kitchen. Whitehaven. 

 M. J. Lansdell, of Messrs. J. C. Nesbit, Lansdell, & Co., Analytical Chemists, 



London. 

 Sydney Lupton. The Harehills, near Leeds. 

 Leisler, Bock, & Co. Glasgow. 

 M. LicHTENSTEiN. Londou. 

 Newton, Keates, & Co. St. Helens. 

 T. R. Ogilvie. Late Public Analyst for Greenock. 

 E. W. Paenell. Chemist at Desoto Alkali Works, Widnes. 

 J. Pattinson. Public Analyst for Newcastle-on-Tyue. 

 Manning Prentice, Jun. Stowmarket. 

 T. Reddeop. Chemist at L. & N. W. R. Co.'s Works, Crewe. 

 G. Rosenthal, Ph.D. Chemist to Messrs. HoUoway Bros. 

 J. Ruffle. Late assistant to Dr. Yoelcker, &c. 

 Alfred Sibson. Analytical Chemist, London. 

 G. L. Ulex, Ph.D. Hamburg. 



Wallace, Tatloce:, & Clare. Joint Public Analysts for City of Glasgow. 

 Robert Warington. Formerly chemist to J. B. Lawes & Co. 

 W. J. Williams. Chemist in charge of Phosphate Sewage Company's Works, 



Hertford. 



It will be observed that in almost every case the replies have been from 

 chemists having special experience in the analysis of commercial phosphates or 

 potash salts ; and their communications contain, in the aggregate, an amount 

 of information on the subject probably far in excess of any previously collected. 



With a few notable exceptions the Committee has received assistance from 

 all the best known authorities on the subject ; a few of the leading chemists 

 known to have special experience of the kind required have not responded 

 to the Committee's request for information, though their assistance was most 

 courteously sought by a special letter in each case. 



The cause of the silence observed in the above mentioned cases is probably 

 similar to that which prompted the following reply from a well-known firm 

 of chemists, whoso results were in some degree the cause of the appointment 

 of the Committee. 



