INDIAN FOREST RECORDS 
Vol. IX] 
'1922 
[ Part HI 
Oils and fats from the Seeds of Indian Forest Trees, 
Parts I-V 
BY 
MADYAR GOPAL RAU AND JOHN LIONEL SIMONSEN. 
Introduction. 
I N view of the ever increasing economic importance of oils and fats 
it has appeared to the authors desirable to commence a study 
of the properties of the various oils and fats obtainable from the 
Indian forests. In the following pages a preliminary account is given 
of the yields, chemical and physical properties of a number of new 
oils and fats. 
It is obvious that for an oil to be of economic value, unless it should 
happen to possess some distinctive property, the source from which it 
is obtained must be available in quantity, convenient for transport 
and low in price, whilst the oil (or fat) content of the seed should be high. 
As the result of the investigations described below it would appear that 
the oil from Calophyllum Wightianum is likely to prove of economic im- 
portance, whilst the fat from Garcinia Camhogia is similar in proper- 
ties to the so-called “Kokum” butter from G. indica and should be of 
equal value. In the cases of the other oils which were examined either 
the oil content was too low or the supply was limited. 
The oils used for investigation were obtained from the seeds either by 
expression or solvent ext taction or by a combination of the two processes. 
The methods adopted for the determination of the physical constants, 
and for the analysis of the oils were the standard ones in general use. 
The solid and liquid acids were separated, after hydrolysis of the oil, 
by means of their lead salts in the usual manner and the crude mixtures 
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