118 BACON. 



•jno 'jno ono 



■^=0.8050; N?" =1.4460; A-^ = + l.l. This hydrocarbon is, therefore, hexa- 



hydro p cymol and the substance found in the oil from the Pittosparum fruits is 

 a dihydroterpene C,oHjs. 



I performed one experiment in which I subjected the dihydroterpene 

 hydrobromide CioHi^Br to the Grignard reaction and heated the reaction 

 product with benzaldehyde for one hour. On decomposing with water and 

 dikite acids, I obtained, besides large quantities of the above hexahydro 

 p cymol, a small amount of a crystalline substance melting at 13C°_. 

 which on analysis proved to be benzoin, the principal product of the 

 reaction being the reduced hydrocarbon C^oHjo. 



0.2032 gram substance gave 0.590 gram CO, and 0.1125 gram H,0. 



Calculated 



for CuHi.O™ Found 



(percent). (percent). 



C 79.3 79.1 



H 5.6 6.1 



Therefore this reaction corresponds with that of dihydrolimonene mag- 

 nesium chloride on benzaldehyde under the same conditions. ^° 



A low-country species of Pittosporum, (P. pentandrum (Blanco) 

 Merr.) was also examined. This tree is very abundant in the lowlands of 

 all parts of the Islands. Special experiments have shown that it grows 

 vigorously in cultivation. The fruits are quite small, and there is con- 

 siderable labor involved in gathering them. One tree yielded 16 kilos of 

 fruit which after grinding gave 210 cubic centimeters of an oil of pleasant 

 odor by distillation with steam. The crude oil boiled from 153° to 165° 

 and after being washed with alkalies and distilled over sodium, had the 

 following properties: Boiling point, 155° to 160° (principally 157° to 



80° 30° 30° 



160°); specific gravity, -j^ =0.8274; N-j^-=1.4620 ; A-^=40.40. 



These properties leave little doubt but that this oil consists principally- 

 of the same dihydroterpene that is found in the higher boiling portions 

 of the oil of the ordinary petroleum nut. 



VETIVER OIL. 



Andropogon squarrosiis L. f. (A. muricatus Ketz.) is native to the Phil- 

 ippines and is found wild and very abundantly in all parts of the Archi- 

 pelago. It is identical with the hlius-l'lius or khas-l-has of India. I have 

 never seen screens and mats woven from roots in the Philippines as is 

 common in India, but the roots are usually laid away with the clothing to 

 impart to it a pleasant odor. This Andropogon is sold in all the larger 

 public markets. The price for small lots is from 15 to 25 centavos, Phil- 

 ipjjiue currency, per kilo. The natives term the roots moras or raiz moras, 

 and claim that boiling them with vinegar preserves the odor. I was not 

 able to verify this statement by experiments in the laboratory, as it 

 seemed to me that acetic acid simply sliglitly intensiiied the apparent 



^ This Journal, Sec. A. (1908), 3, 59. 



