salt is a government monopoly, and consequently so dear that the poor do
not use as much or it as health requires, in others, as in Transylvania,
where it is quarried like stone, the large blocks only are saved, the
fragments, to the amount of millions of hundred weights, being thrown
away.--Bonar, Transylvania, p. 455, 6.

One of the most interesting and important branches of economy at the
present day is the recovery of agents such as ammonia and ethers which
had been utilized in chemical manufactures, and re-employing them
indefinitely afterwards in repeating the same process.

Among the supplemental exhibitions which will be formed in connection
with the Vienna Universal Exhibition is to be one showing what steps
have been taken since 1851 (the date of the first London Exhibition) in
the utilization of substances previously regarded as waste. On the one
hand will be shown the waste products in all the industrial processes
included in the forthcoming Exhibition; on the other hand, the useful
products which have been obtained from such wastes since 1851. This is
intended to serve as an incentive to further researches in the same
important direction.]

The earth was not, in its natural condition, completely adapted to the
use of man, but only to the sustenance of wild animals and wild
vegetation. These live, multiply their kind in just proportion, and
attain their perfect measure of strength and beauty, without producing
or requiring any important change in the natural arrangements of
surface, or in each other's spontaneous tendencies, except such mutual
repression of excessive increase as may prevent the extirpation of one
species by the encroachments of another. In short, without man, lower
animal and spontaneous vegetable life would have been practically