# 



47 — 



So-called 



total 

 geraniol 

 (est. by 

 acetyla- 



tion) 



Oximation 



Formy- 

 lation 



Phthalic 

 method 



Kleber's Method 



Time of 

 reaction 



hour 



Time of 

 reaction 

 1 hour 



Boulez' 

 method 



Ceylon oil 



mixture 

 15°/oCitronellaI 

 45°/o Geraniol 

 40°/o Limonene 



Java oil mixture 

 50% Citronellal 

 40°/o Geraniol 

 10°/o Limonene 



Ceylon 

 Citronella oil I 



Ceylon 

 Citronella oil II 



Java 

 Citronella oil 



61% 



j 92% 



>61,7%j 

 ■52,6 °/o| 

 83,8%) 



Citronellal 

 Geraniol .. 



Citronellal 

 Geraniol .. 



Citronellal 

 Geraniol .. 



Citronellal 

 Geraniol .. 



Citronellal 

 Geraniol .. 



11,7% 



49,3% 



43,0% 

 49,0% 



6,5% 

 55,2% 



6,7% 

 45,9% 



46,6%; 43,5% 



37,2%; 40,3% 



11,0% 

 50,0% 



15,5% 

 76,5% 



20,2% 

 41,5% 



16,9% 

 35,7% 



24,1% 

 59,7% 



13,1% 



47,9% 



50,9% 

 41,1% 



27,3% 



34,4% 



23,0% 



29,6% 



57,2 % 

 26,6% 



14,8% 

 46,2% 



41,4% 

 50,6% 



8,4% 

 53,3% 



10,0% 

 42,6% 



41,3% 

 42,5% 



12,4%;13,5°/o 

 48,6%; 47,5% 



47,3% 

 44,7° o 



7,5%; 9,3% 

 45,1%; 43,3% 



36,4% 

 47,4% 



17,0% 

 42,5% 



55,0%; 60,0%, 

 41,9% 



7,0% 

 51,0% 



6,0% 



44,5% 



54,0% 

 24,8% 



The figures printed in black type are the values ascertained according to the separate methods, while 

 the other figures have been obtained by subtracting these values from the so-called total geranioL 



he is warranted in concluding that, in the manipulation in question, sodium 

 acetate probably acts as a dehydrating agent. In his opinion the fact 

 that all quantities of sodium acetate do not affect the process of reaction 

 in the same degree (as is the case with other catalysers), speaks against 

 the theory of a purely catalytic action of the salt. 



It is not quite clear why Durrans should again discuss the dehydrating 

 action of sodium acetate, for seeing that (as every book on chemistry 

 shows) no water whatsoever is formed in the process of acetylation, the 

 question, so far as this aspect is concerned, is settled in advance. 



On p. 42 of our Report of October 1909 we mentioned the surmise 

 expressed by Jowitt that Lenabatu grass is the product of the hybridisation 

 of Winter's grass (Maha Pengiri) with Mana grass. More recent research 

 supports the theory that Lenabatu grass is a bastard plant 1 ). Accordingly, 

 at the Imperial Institute, the parent-plants, Mana grass and Maha-Pengiri 

 .grass, were found to yield 0,20 and 0,62 p. c. oil respectively, whereas the 

 hybrid, Lenabatu grass, yielded 0,49 p. c. 



Clave Oil. As usual, in trying to form an opinion of the clove- 

 market, there are only rumours or surmises to guide one. The reports 

 of the present year's summer-crop, which were very favourable indeed at 

 first, finally proved to have been too optimistic and at the moment the 

 yield is estimated not to exceed 60 000 bales. Compared with the record- 



!) Bull. Imp. Inst. 10 (1912), 299. 



