BY FRANK SMITH, B.SC, F.I.C. 15 



Caldwell and Courtauld (J. Chem. Soc, 107, 91, 666) 

 state that tetr a- acetyl- prulaurasin separates from concen- 

 trated alcoholic solution in orthorhombic needles at — 5 degrees 

 C, and that prulaurasin is difficultly crystallisable. 

 Prulaurasin, therefore, is probablj^ 2^^^^^^^^^ in Eremophila 

 maculata. 



A portion of the crude syrup (9 grms. in 50 ccs. of water) 

 was decomposed by -05 grm. of Merck's emulsin and dis- 

 tilled in steam. The distillate contained hydrocyanic 

 acid and benzaldehyde, the latter being positively identified 

 by the formation of its phenylhydrazone (M.Pt. 153 degrees 

 C). The liquid from the distillation flask was found to 

 reduce Fehling's solution strongly, and after precipitation 

 with lead subacetate yielded with phenylhydrazone the 

 typical osazone of glucose. 



