BY JAMES M. PKTRIE. 



8H3 



1907.* It was found to exist free in the berries and leaves, and 

 associated with much (uieso) inactive inositol, but no active 

 isomers were present. 



The Active Forms of Inositol. 

 The following Table shows the physical constants Ijy which 

 the active forms and their compounds are identified. 



Table showing the amount of metliyl Ipevo-inositol obtained 

 from the difterent sources: — 



Aspidosperma quebracho ... 0*1% of dried leaves, 



Hevea hrasiliensU rubber ... (2 "5% of the rubber). 



GrerifJea rofmsfa ... ... ... 0*4% of dried leaves. 



Hettrodendroii ole.<i'folinm ... 0"65% of dried leaves. 



From the first Table, it is apparent that the It^vo-methyl 

 inositols (2) from the four difierent sources, have identical melt- 

 ing-points and specific rotatory powers, and therefore, in all 

 probability, represent one only of the three possible stereo- 

 isomers previously mentioned, 



* Comptes rendus de I'Acad. des Sciences, cxlv., 1907, 1196. 



