132 Indianapolis Biochcmical Meeting: Ahstracts [Sept 



Carbohydrate Esters of the Higher Fatty Acids 



WALTER R. BLOOR 



{Washington University Medical School, St. Louis, Mo.) 



Esters of mannitol with stearic acid were prepared and their 

 properties described. One of them was fed to animals. It was 

 found that about 50 per cent. was absorbed. 



The Leaf-Oil of the Washington Cedar (Thuja Plicata) 



ROBERT EVSTAFIEFF ROSE AND CARL LIVINGSTON 



{Department of Chemistry, University of Washington, Seattle) 



The leaf oil of the Washington cedar (Thuja pHcata) has not 

 been examined chemically save by L W. Brandel who pubHshed a 

 Short note on its composition (Pharm. Review, 26, 248), The in- 

 vestigation referred to being only in the nature of an approximate 

 analysis, the authors thought it advisable to undertake a more de- 

 tailed study of the oil, the results of which follow. It may be men- 

 tioned that the resultant conclusions differ very appreciably from 

 those of Brandel (loc. cit). 



Steam distillation at 100°, of the leaves and twigs of Thuja 

 plicata produced about i per cent. of a clear, light yellow oil which 

 possesses the characteristic odor of cedar boughs. The following 

 constants were found: D20 0.913; "D20 1.4552; ^^^Dgo — 4-77; acid 

 number, 0.518; ester number, 2.28; saponification number, 2.8; 

 acetylation number, 8.8. An elementary analysis showed the ab- 

 sence of sulphur and nitrogen, while the precentage composition 

 (C = 78.6; H:^io.4 per cent.) agreed very closely with that of a 

 bicyclic ketone CioHjeO (calc. = 78.04; 11 = 10.52 per cent.). 

 The oil contained no phenols and was soluble in all proportions in 

 anhydrous organic solvents and in 70 per cent. ethyl alcohol. 



A fractional distillation under reduced pressure showed that 

 85 per cent. of the oil boiled between 100° and 110° under 40 mm. 

 The small fraction (about 4 per cent.), boiling below 100°, 40 mm., 

 gave D20 0.851; "D20 1.4609; f<'^D2o + 36.8, and was chiefly com- 



