The Elbert County tribune., 1913-10-24
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presence stimulates human beings to eat clay and
earth But there is another route. and one OF the
romances of science must now be explained. To
wards the end of the last century, when cholera
was prevalent In Alexandria, Doctor Looss. the
distinguished parasitologist working in the
local laboratory at the larva of ancyostoma. In
transferring some of the water containing larvae
from one watch-gass to another by means of
pipette he accidentally split drop to the back
of his hand He did not wait to wipe 1t off, but
after time he noticed that the place where the
drop had fallen intensely irritable and had be
come Redeemed and infamed He then made
further experiment; placing drop OF the fluid
swarming with larvae the back of his hand he
allowed 1t partially to dry up The burning and
the reddening of the skin began over again, and a
little later when he removed what was left OF the
fluid very few OF the larvae were to be found The
great majority OF them had disappeared These
little trifes gave Doctor Looss "furiously to
think" as the French say, and he then repaired
to the hospital. where he found boy whose leg
was about to be removed. He dropped little OF
the nuid full of ancylostoma larvae on the leg and
after the leg was cut off the area In question was
removed and cut into sections. When these sec.
tions were examined through the microscope the
little ancylostoma larvae seen forcing their
way down into the body through the skin espe.
cially travelling by the hair follicles, and to
lesser extent, through the sweat glands into the
deeper layers of the skin 1t was. of course. i'm
possible to pursue this work with the human
ancylostoma and Doctor Looss had to carry on
his work with another species. The larvae Of
caninum we're traced into the blood vessels and
lymphatics Of the dog. Swept along in the blood
stream. they easily reach the lungs. Once arrived
In the lungs the larvae have difficulty In trav.
ersing the soft pulmonary tissue and making their
way In the cavity of the respiratory organs
Thence they travel along the bronchial tubes and
so to the windpipe and into the larynx and up al
most into the mouth, and here they turn back into
the oesophagus and 80 down into the stomach and
Intestine. The whole of this remarkable Journey
takes from seven to ten day. They then shed the
skin of their second moult and later when they
reach the almentary canal. they undergo third
and fourth ecdysis or moult In eight days they
become capable OF reproduction, and in very few
more days the eggs are then passing away from
the body of the host. The whole cycle of their
life history has taken. under favorable circum.
stances. from month to six weeks; under unfa-
yorable circumstances 1t can be almost indefinite.
ly prolonged The truth of this very remarkable
and, until Doctor Looss' Investigations quite un-
heard of fe-history is now accepted Doctor Sam.
bon. however. thinks that In may cases the an
cylostoma larvae reach the alinientary canal with
the blood stream, and directly penetrate its walls
without passing through the lungs
Since the middle of the seventeenth century n
fatal disease has been known to exiet in the
warmer parts OF America. In 1913 Piso, in HIS
"Historla Medico Braziliae" gives an account
OF disease which he calls "Oppilacao" and