260 The Philippine Journal of Science 



it has been made alkaline, a concentrated solution of the alkaloid 

 in alcohol can be made. The alkaloid is somewhat soluble in 

 neutral water. The fuller's earth used in these experiments was 

 not very active. It enabled me to extract from 66 to 90 per cent 

 of the alkaloid by using relatively large quantities of the earth. 

 A more active variety should be used in order that the bulk may 

 be kept small. This active variety can either be obtained from 

 Professor Lloyd or prepared by the methods described ^ by him. 

 He was able to secure practically complete absorption by the 

 use of eight parts of the hydrous silicate to one part of the 

 alkaloid. 



'^Journ. Am. Phar. Assoc. (1916), 5, 381. 



