Certain varieties of Woodland Mosquitoes breed only in woodland
pools, appearing in the early spring, and travel a greater distance
than the domestic species. They are not usually troublesome indoors.

It has been proved that malaria is transmitted only by certain
species of Anopheles, one of which is the domestic mosquito.
Eliminate this one species of mosquito and the disease will
disappear as a direct consequence. So if you hear that pretty little
song in the house, don't swear, thank the Lord that effects always
follow causes. You need never be without a bite in the house if you
have a nice cesspool handy for Sis Mosquito, for each one will have
a first-class feed with you every second or third day.

They are needless and dangerous pests or pets. Their propagation can
be prevented by draining or filling wet areas, by emptying or
screening water receptacles, and by spraying with oil where better
measures are not available. Oil should be sprinkled in any
cesspools, sewers, and catch basins, rain barrels, water troughs,
roof gutters, marshes, swamps, and puddles that cannot be done away
with. All ponds and large bodies of water should have clean sharp
edges, because in shallow, grassy edges larvae of the malarial
species are commonly found. Large ponds with clean edges, inhabited
by fish or predatory insects, are safe; smaller ponds, if wind
swept, and all ponds in the "ripple area" are safe. All rain pools,
stagnant gutters, overgrown edges of large ponds, and all
receptacles holding water not constantly renewed, are dangerous. You
raise most of your own mosquitoes.

Now a word specially concerning this revised edition.