It was partly through pioneer study of the Siouan Indians that the popular fallacy concerning the aboriginal Great Spirit gained currency; and it was partly through the work of Dorsey among the cegiha and Dakota tribes, first as a missionary ... Read more of The Siouan Mythology at Siouan.caInformational Site Network Informational
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Tobacco And Lobelia

Presumption Of Death; Survivorship

Opium And Morphine

Chlorate Of Potassium Etc

Zinc Silver Bismuth And Chromium

Hydrochloric Acid

Delivery

Aconite

Abortifacients

Cocaine


Superfoetation





By superfoetation is meant the conception, by a woman already pregnant,
of a second embryo, resulting in the birth of two children at the same
time, differing much in their degree of maturity, or in two separate
births, with a considerable interval between. The possibility of the
occurrence of superfoetation has been doubted, but there are
well-authenticated cases which countenance the theory of a double
conception. It has been shown that the os uteri is not closed, as was
once supposed, immediately on conception. Should an ovum escape into
the uterus, it may become impregnated a month or so after a previous
conception. The most probable explanation is that the case has been one
of twins, one being born prematurely; or, on the other hand, the uterus
may have been double, and conception may have taken place in one cornu
at a later period than in the other cornu.





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