280 Annual Report for 1912 of the Consulting Chemist. 



The material was clean and in good condition, and I can 

 well understand that it would be a useful food, more particularly 

 for pig-feeding. The price was 3/. a ton, Avhicli was not by 

 any means too dear, 



B. Fektilisers. 

 1. Basic Slag. 



Reference has been made in the earlier part of this Report 

 to the matter of the " solubility " of basic slag. In this 

 connection the following case may be mentioned, in which a 

 Mend)er sent a sample of basic slag requesting that the 

 " solubility " might be determined, not merely with one 

 single extraction with citric acid, but with a second and a 

 third as well. 



The following figures were obtained : — 



2. "■Grass Producer''' {Guarantee ivrongly stated). 

 A Member of the Society drew my attention to a manure 

 sold under the name of " grass producer," the guaranteed 

 analysis of which was given as follows : — 



Nitrogen, equal to ammonia .... 2'3 



Phosphates, equal to tri-calcium phosphate . 4^5 



Potassium oxide, equal to sulphate of potash . 1*2 



Lime 1020 



My analysis of the sample showed the guarantee to be 

 practically satisfied, but I should point out that in two respects 

 this guarantee was put out in a form which is contrary to the 

 requirements of the Fertilisers and Feeding Stuff's Act. The 

 latter requires the amount of nitrogen to be specifically stated, 

 and not merely its equivalent in ammonia ; similarly, the 

 amount of potash (potassium oxide) must be given, and not 

 this translated into terms of sulphate of potash. To do other- 

 wise is misleading to the purchaser. 



3. ''Fertiliser:' 



There was brought to my notice a circular with letter 



referring to a material otiered under the above name, and 

 manufactured at Liverpool. The guarantee was given in the 

 following terms : — 



Nitrogen, equal to ammonia .... 1"50 



Soluble phosphates ...... 9'0 



Insoluble phosphates , , , l-Q 



