OF SOME EDIBLE AMERICAN FUNGI. 



155 



Ether Extract. The amount of ether extract varied from 

 1.6 to 7.5 per cent in different species, as shown in the follow- 

 ing summary of results. 



ETHER EXTRACT. 



Ge*rard* examined the extract from Lactarius vellereus 

 and L. piperatus, and found oleic and stearic acids present both 

 as glycerides and as free acids. Volatile fatty acids were also 



* Ge*rard, Journal de phannacie et de chimie, 1890, 5 SeVie, xxi, p. 408 ; 

 ibid. 1891, xxiii, p. 7. References to the earlier literature will be found in the 

 first of these papers. 



