CHEMICAL DISCOVERY AND INVENTION 



The colouring matter of the seals was generally vermilion or 

 verdigris, mixed in some cases with dark organic matter. 



In conclusion the work of the laboratory may be roughly 

 classified as Revenue and non-Revenue. The former is carried 

 on partly at Clement's Inn and partly at the Custom House and 

 eighteen provincial stations. The nature of the Revenue work 

 has been sufficiently indicated in preceding pages. 



The non-Revenue work consists largely in the examination 

 of samples in connection with Crown contracts for the supply 

 of material required by the various Government Departments. 

 Besides this the whole of the chemical work of the Board of 

 Agriculture and Fisheries (analytical, advisory, and research), 

 and of the Geological Survey is carried out by the Government 

 Laboratory. While the work for such departments as the Post 

 Office, Home Office, and War Department is largely of a routine 

 character, questions involving more or less elaborate research 

 are constantly referred to the laboratory by Public Departments, 

 by Royal Commissions, and by Departmental Committees. The 

 following list contains a few examples of the researches which 

 have been carried out in recent years and will serve as an 

 indication of the variety and extent of this aspect of the work 

 of the laboratory. 



Nature of Investigation. 



New tables for determining the original 

 gravity of Beer. (Published officially, 

 and by The Institute of Brewing.) 



New Sikes Hydrometer Tables. 



The amount of Sugar remaining in the 

 refining vessels after the lapse of 

 periods of 7, 12, and 21 days : in con- 

 nection with the Sugar Bounties. 

 (Confidential ; not published.) 



Growing of Sugar Beet. (Published by 

 Board.) 



Absorption of Tar Acids by Sheeps' Wool. 



Action of Alkalis upon Straw. 



Deterioration of Liver of Sulphur. 



Relation between citric solubility and the 

 availability of the phosphates in slags. 



Department for which 

 Conducted. 



Board of Customs and 

 Excise. 



do. 

 Foreign Office. 



Board of Agriculture 

 and Fisheries. 

 do. 

 do. 

 do. 

 do. 



