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.
The farm papers are supported mainly by men with large acreage, it
is the rise in value of these acres more than the rise in farm
products that has pulled the land-owning farmers out of the hole
that they were in up to about the year 1900. Farmers' knowledge,
liking, and equipment was for big fields, half cultivated, and at
first they did not like to hear that they had been wasting so much
of the labor that had bent their backs.
Pages:
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37