55 



On distillation the following fractions were obtained : — 



Comparing these results with those recorded for the Trinidad oil of 

 A. SchoenantJius, the following digerences are to be noted. — The specific 

 gravity of the Jamaica oil is markedly lower. Whereas the Trinidad 

 oil is dextro-rotatory, the Jamaica product is laevo-rotatory. The 

 Chemistry of this oil requires investigation and it is hoped that some 

 research Chemist may come forward to elucidate its composition. 



Andropogon Nardus, 



This grass is the one grown in Ceylon. It appeared lass vigorous 

 and hardy at Hope Gardens than the Creole grass. The results of dis- 

 tillation were nearly three times as great as with A. SchoenantJius. A 

 yield of 2-9 cubic centimetres oil per ft) of fresh grass was consistently 

 maintained. This equals 11-6 ozs. per cwt. of grass as against 4ozs. 

 from A. ScJioenanthus. 



The following results were obtained : — 



Specific Gravity 60<* F 0'893o 



Optical Activity 



60 °F 

 + 17-0°V T=:29-5°C. 



on distillation the following fractions were obtained : — 



Temperature. 

 C. 



195-217 



217-225 



225-235 



Above 235 



Per Cent. 



6 

 40 

 50 

 24 



