178 MEDICINAL AND POISONOUS PLANTS 
Peppermint camphor, also known as menthol, C,)>H»O, is 
a substance of closely similar properties which is obtained 
from the volatile oil of peppermint and related species of 
plants. Its important uses are too familiar to need mention- 
ing. Although not so powerful a poison as laurinol, yet 
serious results may follow its careless internal use. 
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Fic. 169.—Laurel-camphor Tree (Cinnamomum Camphora, Laurel Family, 
Lauracee). Flowering branch, 3. (Baillon.)—Tree growing 12 m. 
tall; leaves thick; flowers yellow; berry dark red. Native home, China 
and Japan. 
Resins are non-crystalline solids or semisolids, soluble gen- 
erally in alcohol, ether, and volatile oils, but insoluble in 
water. They contain the same elements as volatile oils, but 
with a larger proportion of oxygen. On this account and 
