SUBSTANCES REPUTED MEDICINAL. 177 
Eucalypts contain a volatile oil, varying in composition in 
some species, and of a somewhat complex nature (see ‘“‘ Oils’), 
a bitter or tonic principle, in anamorphous condition, and strongly 
hygroscopic, and a &7no. 
The following species may perhaps be considered the chief 
medicinal species :— 
For volatile oil—Z’. amygdalina, E. oleosa, E. globulus. 
For bitter principle—Z. rostrata, E. globulus. 
For kino—Z. rostrata, E, calophylla, E. corymbosa, E. 
maculata, E. tesselaris, E. siderophloia, E. amygdalina, E. 
piperita. 
It was formerly imagined by some that Eucalyptus: leaves 
contain guinza or some other of the well-known alkaloids of 
Cinchona barks. But the experiments of Broughton, the Govern- 
ment quinologist, Ootacamund, India, entirely disprove this ; for 
upon careful examination of the bark and leaves, this chemist 
states that neither guzzza nor any of the other alkaloids of Cin- 
chona barks, as guznidia, cinchonta, or cinchonidia, exist in the 
plant in any proportion. The properties of the leaves, therefore, 
so far as is known at present, depend essentially upon the volatile 
oil. (Bentley and Trimen, Medicinal Plants, 109.) 
The latter statement is hardly correct, as they owe some of 
their principles to the bitter principle already referred to. 
The juice of Eucalyptus leaves of various species has been 
tried as a stimulant for the growth of the hair, much in the same 
way as rue is used, but although the remedy certainly can do no 
harm, the cases in which good has been reported to have ensued 
are not so well authenticated as one could wish. 
Mr. Baker (United States Consul at Buenos Ayres, where 
several Eucalypts have been largely introduced), reports that the 
people there bruise the leaves of Z. glodulus and bind them to 
the forehead in nervous headache. 
The leaves of Z. g/obulus and other species possess febrifugal 
properties to some extent, and Mr. Bosisto has prepared a “‘ Lzguor 
Euc. globulz,” which is sold as a fever and ague remedy. It is 
said to counteract malaria without exciting the prejudicial effects of 
quinine on the nervous system. It is also used as a general tonic. 
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