3i6 



MYRTACE.E 



from near the base to the apex; pale grayish-green, smooth, and of 

 a leathery texture; margin entire, with a parallel vein a short dis- 

 tance from it, running from base to apex of the leaf; odor camphora- 

 ceous; taste cooling, bitter, astringent, and aromatic. 

 Powder. Characteristic elements: See Part iv, Chap. I, B. 



FIG. 183. Eucalyptus globulus Branch. 



CONSTITUENTS. The virtues of the leaves depend upon a volatile oil 

 (which contains the valuable antiseptic, Eucalyptol) existing to the 

 extent of 2 to 6 per cent.; the freshly-dried leaves yield the greatest 

 proportion. 



