Wessington Springs herald. (Wessington Springs, Aurora County, Dakota [S.D.]) 1883-1891, 1883-05-26
In the course Of his remarks he pre-

In the course of his remarks he pre-
eented the following series of twenty
statements culled from leading medical
authorities, in relation to malaria, and
winch, ne maintained, are eXplicablc on
the mosquito theory.
lst. Malaria affects by preference low
and moist localities. Such localities are
the natural abode of mosquitoes.
"a. Malaria is seldom at q lower tenn
perature than go deg. F.; neither are
mosquitoes.
Sd: The active agency of malaria is
checked by a temperature of 80 deg. F.
1he same may be said of the mosquito.
18th. Malaria is most abundant and
most virulent as We approach the equa-
tor and the seacoast. So, under speci-
he'd conditions, are mosquitoes.
9th. Malaria has an affinity for dense
foliage, which has the power of accu-
mulating it, when lying in the course of
winds blowing from malarious iocali-
Ties. Trees accumulate mosquitoes in
the same manner.
9th. Forests and even woods have the
power of o%bstructing malaria and of
preventing its transmission under these
circumstances. So of mosquitoes.
9TH. BY atmospheric currents, mala-
ria may be transported to considerable
distances, probably as far as five miles.
Mosquitoes also.
9Th. Malaria may be developed in
previously healthy places by turning up
tne soil, as in making excavations for
the foundations of houses, tracks for
railroads and beds for canals. Such
excavations when containing stagnant
water may also serve as mosquito nur-
series.
9th. In certain localities malaria
seems to be attracted and absorbed by
bodies of water lying. in the course Of
such winds as watt It from miasmatic
source. Such bodies of water may also
arrest the passage of the mosquito, un-
der certain circumstances, as in the alb
sence of q strong wind to watt them
over.
10th. Experience alone enables us to
determine the presence or absence of
malaria in any given locality. Con-
versely, the absence of the mosquito, it
was claimed by DR.. King, appeared to
PASNSho ulSVuSC.
18th. In proportion as countries pre-
viously malarious are cleared up and
thickly settled, periodical fevers disap-
pear. The consequent better drainage,
disappearance of under-brush, and the
more free-play of fy-catching birds may
also contribute to lessen mosquitoes.
18th. Malaria usually keeps near the
surface of the earth; it is said to "hug
the ground" The same is true of mos
quitoes.
18th. Malaria is most dangerous when
the sun is down, and seems to be almost
inert during the day. The mosquito is
active at night, at rest by day.
18th. The danger of exposure to ma
laria after sunsets greatly increased by
the person exposed sleeping in the night
air. Persons while awake brush away
mosquitoes; those asleep submit to be-
ing bitten.
18th. OF all human races the white is
most sensitive to marsh fevers, and the
black least so. The black man is less
easily seen by the mosquito, and the
odor and g%reasiness of his cutaneous Sc
cretiOns are assumed to be offensive to
the insects.
10th. In malarial districts the use of
fire, both indoors and to those who sleep
Eout. affords a. comparative security
against malarial disease. Mosquitoes,
attracted by the light, fly into fires and
lamps at the cost of life.
18th. The air of cities in some way
renders the malarial poison innocuous,
for though a malarial disease may be
raging outside, it does not penetrate far
into the interior. Mosquitoes also, dur
ing their nocturnal flight, will be ar
rested by the houses, fences, lamps and
fires of the suburbs, so as to be pre-
vented from penetrating far into 'the
interior of cities.
18th. Malarial diseases are most prey
alent toward the latter part of the sum-
mer, and in the autumn. Mosquitoes
are more plentiful during those seasons
10Th. Malaria is arrested not only by
trees, but by walls, fences, hills, rows
Of houses. canvas curtains, gauze wells,
mosquito nets, etc. So are mosquitoes.
goth. Malaria spares no age, but it
affects infants much less frequentlythan
adults. Infants, however, from the
care with which they are housed and
covered with gauze to keep off house
files, and also shielded from mosquito
bites.-Scientifc american.