13-1 . APPENDIX, 



determination, or the application of other tests, in order to establish 

 the identity of this compound with phytosterin or analogous choles- 

 terinJikc principles. The fatty acids melted at 53— 5i^. 



The powdered fruits were then exhausted with ether, which 

 dissolved out an alkaloid, having a slight numbing sensation on the 

 tongue, and appearing to be cocaine. 



Absolute alcohol then removed cocatannic acid and an alkaloid ; and 

 finally water extracted colouring and albuminous matters, and some- 

 thing which reduced alkaline copper solution on boiling. 



The percentage composition of the fruit as deduced from the 

 examination may be arranged as follows : 



Moisture lost at 100'' C. after partial desiccation over 



sulphuric acid... 

 Ash ... 



••• ••• 



**• ••* ••• ■•• ..• 



5-423 

 4-271 



Petroleum ether extract containing 3-021 per cent, of 

 glycerides of fattj acids, and 1-610 per cent, of im- 

 pure phytosterin (?) with colouring matter 4-540 



Ether extract, soluble in petroleum ether -232 per cent., 

 soluble in water and containing cocaine '11 per cent., 

 soluble in absolute alcohol '069 per cent., soluble 

 in ether but insoluble in petroleum ether, alcohol or 

 water -029 per cent. 



440 



Absolute alcohol extract containing cocatannic acid and 



a trace of alkaloid 



Aqueous extract 



ft • • 



• ft ft 



3-820 



23 -440 



18 9 J.) 



RUTACE^. 



Oil of Iiemon. 



V. Olivicri {Cazz, Chim., svi., 318) found in oil of lemon, besides 

 the limonene (Wallach), also another terpene C^°1I^\ boiling at 



170— 170-5° 0.(338 -339° F.).thetetrabromide of which fuses at 

 31" C. (88°r.), but the dihydro- chloride showing the characteristics 

 of limonene. From the higher boiling portions the author has fur- 

 thermore isolated a sesquiterpene C"H''*, boiling at 240—242° 

 C. (464—408° F.), which increases in quantity with the age of 

 the oil. For detecting adulteration with turpentine, the author 

 recommends the use of the polarimetcr. Lemon oil is lajvogyre 



