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Various

"Scientific American Supplement, No. 799, April 25, 1891"


The annual cost for dealing with the Salford sewage is estimated at in
round figures L2,500 for coal, labor, maintenance of engines, boilers
and dynamos. To this must be added the consumption of iron and its
replacement, which would have to be written off capital expenditure.
If a colorless effluent were required, absolutely free from suspended
matter, the additional cost is estimated at from L1,200 to L1,500.
* * * * *


LAVENDER AND ITS VARIETIES.
By J. CH. SAWER, F.L.S.

Lavender--technically _Lavandula_. This name is generally considered to
be derived from the word _lavando_, gerund of the verb _lavare_, "to
wash" or "to bathe," and to originate from the ancient Roman custom of
perfuming baths with the flowers of this plant.
The general aspect of the various species which compose this genus of
labiate plants, although presenting very characteristic differences,
merges gradually from one species to another; all are, in their native
habitat, small ligneous undershrubs of from one to two feet in height,
with a thin bark, which detaches itself in scales; the leaves are
linear, persistent, and covered with numerous hairs, which give the
plant a hoary appearance.


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