PROCEEDINGS OF THE CHEMICAL DEPARTMENT. 



497 



Good Ordinary Calcutta Linseed. — This sample contained no 

 less than 19-68 per cent, of impurity, consisting chiefly of olea- 

 ginous seeds, among which Indian rape and a few grains of a 

 small variety of Teel seed (Sesamum orientate) could be recog- 

 nised. There were also a good many small fragments of what 

 appeared to be flax straw. Other seeds were present which I 

 could not recognise, no doubt those of weeds which had grown 

 along with the crop. 



The low percentage of albuminous comjxmnds here again 

 merits notice, as well as the larger quantity of fibre. In the impure 

 sample, the excess is explained by the presence of the flax straw. 

 But even in the pure seed it is far above the average of European 

 samples. 



Ordinary Calcutta Linseed. — This sample must be described 

 as very ordinary indeed, for it contained 3073 per cent, of im- 

 purities, consisting mainly of oleaginous seeds. In this case 



