496 PROCEEDINGS OF THE CHEMICAL DEPARTMENT. 



Calculated Composition of 

 Cake from the Pure Seed. 



13-38 

 11-98 



25-82 

 3651 



7-72 

 4-59 



100 00 

 4-12 



Black Sea Linseed. — The seeds in this case were small, only 

 about half the size of the last, and they were flat and thin. The 

 impurity amounted to 1010 per cent. Notwithstanding this, 

 however, the sample is of excellent quality, and the pure seeds 

 give a cake of high quality. The foreign seeds appeared to be 

 almost entirely oleaginous. Analysis gave — 



Calcutta Linseed. — Three samples of this variety of seed have 

 been examined — one simply described by that name, the others 

 distinguished as good ordinary, and ordinary, terms which, as we 

 shall soon see, appear to be used in a somewhat lax manner. In 

 all three the linseed is small, but the grains are round. The 

 first sample, which was not distinguished in any special way, 

 cost 50s. per quarter, and contained 5-78 per cent, of impurities. 



