54 



Proceedings of the Royal Irish Acadenif/. 



/S-ortliocresyl-arabinoside, )8-carvacryl-arabinoside, y8-^-naphthyl- 

 arabinoside, and yS-pbenyl-glucoside, to which emulsine had been 

 added, were kept at a constant temperature of 45*^ C. for seventy-two 

 hours. The phenyl-giucoside was almost completely converted into 

 phenol and glucose ; but, in the case of the arabinosides, although faint 

 odours of carvacrol and cresol could be observed, there was no 

 indication of the presence of even a minute trace of arabinose. 



In the following Table we include, for purpose of comparison, all 

 the known synthetical glycosides of the phenols : — 





Name. 



Hydrolysed 

 by 



Emulsine ? 



Synthesised by 



w 

 g 





No. 





< o 



H 



1 n o*ti'AQtt1 -'i I'ci ni tiaqi n 

 fJ-Vyl LilUUlt^o V 1~<II clUillUolUtTy . 



No. 



Xtjcl clIKL XjUIXII. 



'A 



P( — 1 ,1 Wfl 1 «0 l"l ni X\ AG! n A 



/J v^cll Vilol y i-ctl tiUiLlUoiU.c J . 



No. 



XV V ctll clllll X!iU I ill. 





)3-Phenyl-glucoside, . 



Yes. 



Michael. 





Tetracetyl-iS-phenyl-gliicoside, . 



— 



Michael. 





Guaicyl-glucoside, 



Yes. 



Michael. 





Eiigenyl-glucoside, . 



Yes. 



Michael. 





Ilelicine, ..... 



Yes. 



Michael. 





Methyl-arbutine, 



Yes. 



Micliael. 





^-a-Naphihyl-glucoside, . 



1 fS. 



Drouin. 





y3-Thymol-glucoside, 



Yes. 



Drouin. 





iS-Orthocresyl-glucoside, . 



Yes. 



Pyan. 



1 



Tetracetyl-)8-ortocresyl-glucoside, 



No. 



Pyan. 





)8-Metacresyl-gliicoside, . 



Yes. 



Pyan and Mills. 



w 

 1 



Tetracetyl, .... 





Pyan. 





)8-Para-cres5^1-glucoside, . 



Yes. 



Ryan. 





Tetracetyl- ,, 



No. 



Ryan. 





i8-i3-Naphthyl-glucoside, . 



Yes. 



Ryan. 





Tetracetyl- 



No. 



Ryan. 





)3-Carvacryl-glucosi(]e, 



Yes. 



Ryan. 





j8-a-Naphthyl - galactoside, 



Yes. 



Ryan and Mills. 





)3-Phenyl-galactoside, 



Yes. 



Fischer and Armstrong. 





Tetracetyl- . . 





Fischer and Armstrong. 



« W 



/8-Phenyl-Maltoside, 



Yes. 



Fischer and Armstrong. 



_ • P o 



H O 

 o 



Heptacetyl- . . 







