in the glucoside form, with one possible exception. The ex- 

 ception referred to is the occurrence of a free sugar, sup- 



1 2 



posed to he rhamnooe, in a certain palm-wine • Czapek says: 



"The well known methyl pentoses do not occur in the free 

 state in plant organisms so far as we know." 



Since rhamno.:e forms a lead compound, the sugar, if 

 present, should be found in the first lead precipitate, A, 

 and also in filtrate A in case it is not completely precipitat- 

 ed in the presence of acetic acid and alcohol. 



The filtrate A (about two liters) was examined first. 



It had a light yellow color, contained an excess of lead 



acetate, and was acid from the acttic acid liberated in the 



3 

 precipitation of the lead compound A • This filtrate was 



evaporated by dryness under diminished pressure to remove 



alcohol, water, and acetic acid. The clear distillate had 



a peculiar odor suggesting both tea and arpyl formate. It was 



saved for examination and was found to be not poisonous. The 



reaiiue in the dish after evaporation was a tough reddish brown, 



gunrcy mass which could be drawn out into fine threads. 



1, Chem. Seit. 23, Rep, 177. 



2, Log. cit, 1, 209. 



3, On standing several weeks, a small quantity of tar 



separated out on the walls of the vessel, also a brown 

 precipitate which was filtered off. suspended in water 

 ana hydrogen sulphide was being passed In when an 

 accident occurred and it was lost. 



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