EEPOKT OF CONSULTING CHEMIST FOR THE YEAR 1911. 551 



EEPORT OF CONSULTING CHEMIST FOR THE 

 YEAR 1911. 



By Dr. J. A. Voelcker, M.A., F.I.C., F.L.S. 



During the year 1911, seventeen samples were submitted to me, in 

 my capacity as Consulting Chemist to the Society, for analysis. 



This is an increase of three on the number sent in 1910. The list 

 of samples is as follows : — 



Soils 4 



Waters 8 



Manures ....... 4 



Miscellaneous .... . 1 



17 



1. Soils. 



Of the four samples sent to me, observations on the following 

 three cases may be of interest: — 



(a) This was a sample of turf and soil from the neighbourhood of 

 Waltham Cross. It came from a pasture which had been much 

 neglected, and it was desired to improve this for the grazing of cows. 

 The herbage bore all the appearances of having come, as stated, from 

 a " neglected pasture," for it was composed to a large extent of tufts 

 of long grass which could be readily pulled off by the hand. 



The analysis of the soil gave the following results: — 





Soil dried at 212° F, 





Per cent. 



Organic matter and loss on heating 



. 7-32 



Oxide of iron .... 



. 2-87 



Alumina . . 



. 3-94 



Lime . . 



. =50 



Magnesia ..... 



. -40 



Potash 



. -28 



Soda . . . . . . 



. -27 



Phosphoric acid 



. -17 



Sulphuric acid . . 



. -07 



Insoluble silicates and sand 



. 84-18 





*- 



100-00 





. -317 



