The Popular Science Monthly, Volumen43D. Appleton, 1893 |
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Página 128
... ovum draws the spermato- heavens the system might be disclosed to zoa toward itself by chemical influence , act- us , or even if we could compute the distance ing as an attracting stimulus , in a similar of every star , the design might ...
... ovum draws the spermato- heavens the system might be disclosed to zoa toward itself by chemical influence , act- us , or even if we could compute the distance ing as an attracting stimulus , in a similar of every star , the design might ...
Página 129
... ovum has been observed to have a primitive streak , which is the first stage of the series formulated by the author . In this stage ( twelfth or thirteenth day ) the human ovum is a rounded , somewhat flattened sac of three or four ...
... ovum has been observed to have a primitive streak , which is the first stage of the series formulated by the author . In this stage ( twelfth or thirteenth day ) the human ovum is a rounded , somewhat flattened sac of three or four ...
Página 169
... ovum , ectodermal as well as endodermal , are connected together by a fine protoplasmic reticulum " ( p . 41 ) . " The continuity of the various cells of the segmenting ovum is primary , and not secondary ; i . e . , in the cleavage the ...
... ovum , ectodermal as well as endodermal , are connected together by a fine protoplasmic reticulum " ( p . 41 ) . " The continuity of the various cells of the segmenting ovum is primary , and not secondary ; i . e . , in the cleavage the ...
Página 170
... ovum until maturity a part of that syncytium , the separation of the generative products does not differ essentially from the internal gemmation of a Protozoon , and the inheritance by the offspring of peculiarities first appearing in ...
... ovum until maturity a part of that syncytium , the separation of the generative products does not differ essentially from the internal gemmation of a Protozoon , and the inheritance by the offspring of peculiarities first appearing in ...
Página 481
... ovum are perpetually divided and subdivided into small groups distrib- uted over an unlimited nutritive area , so that they can get materi- als for growth at no cost , and expend nothing appreciable in mo- tion or maintenance of ...
... ovum are perpetually divided and subdivided into small groups distrib- uted over an unlimited nutritive area , so that they can get materi- als for growth at no cost , and expend nothing appreciable in mo- tion or maintenance of ...
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agaves alternating current American ancient animals appears APPLETON archæology become body Bond Street called cause cells centimetre cents character chemistry cholera color crime disease effect electric ence existence experiments fact feet fibers fish fruit G. P. Putnam's Sons Geological geologists give glacial human hundred ical idea illustrated important Indians insane interesting kind labor less living magnetic material matter ment methods mountain natural natural selection nerve observed organs origin Oswego ovum paper patients persons phenomena plants popular practical present produced Prof protoplasm published question river says schools scientific seeds silver Society somatic cells species spirit student surface theory thousand tion trees tribes United Ural Cossacks URAL RIVER volume words World's Columbian Exposition York Yuruks