CHAPTER XI. 



OILS AND FATS — GLYCERIN. 



Particulars of the chemistry of vegetable oils and fats 

 may be obtained fi.-om 



Spon's Encyclopaedia, ' Oils and Fatty Substances.' 

 Beilstein. Handbuch der organischen Chemie, 3rd 



ed. vol. I. ; Pflanzenfette. 



KOnig. Chemie der mens. Nahrungs- und Genuss- 



mittel, Berlin, 1889. 



Read : — 



Green. Proc. Roy. Soc. xlviii. (1890). 

 Sigmund. Sitzb. Wien. Akad. (1890). 

 MtJLLER. Ber. d. d. bot. Ges. viii. (1890). 

 SUROZ. (Abst.) Bot. Cent., Beiheft i. (1891). 



Oils and Fats. 



These substances will all be in the benzene or 

 petroleum ether extract — the extract may also contain 

 some volatile oils, terpenes, resins, etc., but except in the 

 case of barks the amount of these is generally incon- 



16—2 



