Examination of Essential Oils. 7 



Diagram 7— Calamus. — The spectrum beyond Cd 12 transmitted by a dilution of 

 -ttooo was abnormally feeble. 



Nutmeg hydrocarbons. — Specimens referred to in Dr. Gladstone's paper on " Es- 

 sential Oils." No. 1. B.P. 162-5 — 164°. No. 2 contains a trace of cymene. 



