1903.] D. Hooper — Silajit : an ancient Eastern Medicine. 101 



sun until it thickens, the surface is removed, and this sut-silajit is allowed 

 to dry. 



That there is no uniform combination between the organic and 

 mineral constituents is shown in the analysis of two specimens of black 

 silajit supplied by two Kabirajis of Calcutta. 



No. 1. No. 2. 



Water 795 934 



Organic matter 35 05 55*36 



Mineral matter 57*00 35*30 



100*00 100*00 



Ash soluble in water 10*90 24*4 



soluble in acid 15*55 9*4 



insoluble 30*55 1*5 



A more complete examination was made last year of four addition- 

 al samples : No. 1, round cakes from Calcutta; No. 2, long flattened cakes 

 from Calcutta; No. 3, from Jaunsar, through the Director Imperial 

 Forest School, Dehra Dun; No. 4 from Bashahr Forest, Punjab, through 

 the Curator, Imperial Forest Museum. 

 1 2 



Water 9*85 15*90 



* Organic matter 56*20 49*86 



fAsh 34*95 3424 



11*15 



10*99 



51*55 



56*86 



37-30 



3215 





100*00 



100-00 



10000 



10000 



* Including nitrogen 



103 



•82 



325 



1-26 



f Containing 











Iron and alumina 



2*24 



1*08 



6*00 



4-64 



Lime 



4*36 



3-96 



3*86 



3-88 



Magnesia 



1*50 



•52 



•15 



1*34 



Potash 



907 



669 



371 



610 



Soda 



411 



763 



1-07 



•81 



Phosphoric acid 



•16 



•25 



•27 



•20* 



Sulphuric acid 



•58 



•24 



•34 



•14 



Chlorine 



•07 



12 



11 



•06 



Carbonic acid, &c. 



1151 



1213 



3-69 



4*83 



Silica 



1*35 



1*62 



18*10 



10*15 



The chief ingredients of the ash are the bases lime, 



magnesia, potash 



and soda, combined 



as carbonates. The absence of 



a large iron and 



alumina precipitate indicates the 



non-identity of this substance with 



the mineral silajit of 



Nepal and Behar. 







J. II. 15 











