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assistance, locally, to do so, which led me to study the wonderful qualities of
osmium, –
it easy for
me to conceive how malaria is produced in such places
as Heat and Central Africa, British Guiana &c., which for many centuries have been fed with the soluble tetroxide from decomposing rocks in the mountain ranges.
Water is the great carrier and distributor of this soluble tetroxide of osmium, and the culminating effect of drinking such water is illustrated by the fact once told me, of
outbreak of malarial fever among the crew of a sailing ship, some months after her departure from port, at sea,
infection by mosquito
where possible.-
I have the honor to be
My Lord
Your obedient servant
J. Grant Smith