156 



COMPOSITION AND NUTRITIVE VALUE 



obtained, together with cholesterin or a closely related body 

 (ergosterin), and evidences of lecithin. In the present re- 

 search both fats and free fatty acids were found, and 

 cholesterin reactions were obtained in every instance, the 

 quantitative relations apparently varying considerably in the 

 different species. 



Alcohol Extract. The following summary shows the 

 amount of material soluble in warm 85 per cent alcohol in a 

 number of species. 



ALCOHOL EXTRACT. 



Inorganic Constituents. The amount of ash varied some- 

 what, as shown in the table below. Among the bases present, 

 K, Na, and sometimes Ca are to be found, the K being quite 

 abundant. Iron was always present. Of acids, phosphoric 

 and sulphuric predominated, chlorine being occasionally found. 



ASH. 



The Percentages are Calculated on the Dry Substance. 



Coprinus atramentarius, a .... 



" " 6 (young) . 



" comatus 



Hypholoma candolleanum a . . . 



b (young) 



Morchella esculenta a 



" " 6 (young) . . 



Agaricus campestris a 



6 



Clitocybe multiceps 



" " (stems) .... 



" (pileus) .... 



Polyporus sulphurous 



Marasmius oreades 



Pleurotus ostreatus 



Per cent. 



16.8 

 20.1 

 12.6 

 13.9 

 19.9 

 10.4 

 13.6 

 11.7 

 17.2 

 11.6 

 13.0 

 10.8 

 7.3 

 7.2 

 6.1 



