Science Progress, Band 6John Murray, 1897 |
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Seite 29
... ment . The assemblage of rock - types there belongs , as already remarked , to the alkali group . It is true that andesites occur among the earlier volcanic products of the Æolian Islands and again in the Cabo de Gata district , though ...
... ment . The assemblage of rock - types there belongs , as already remarked , to the alkali group . It is true that andesites occur among the earlier volcanic products of the Æolian Islands and again in the Cabo de Gata district , though ...
Seite 99
... ment of parts of so complicated a character can only occur when the supply of material and the phenomena of cell- division occur with almost mathematical exactitude . If , for example , a few molecules of the material which gives rise ...
... ment of parts of so complicated a character can only occur when the supply of material and the phenomena of cell- division occur with almost mathematical exactitude . If , for example , a few molecules of the material which gives rise ...
Seite 117
... ment Williamson and Scott have clearly shown that in dif- ferent parts of their structure the two genera Heterangium and Lyginodendron reveal distinct points of agree- with Gleicheinacea , Osmundacea , Marattiacea , Ophioglossea , and ...
... ment Williamson and Scott have clearly shown that in dif- ferent parts of their structure the two genera Heterangium and Lyginodendron reveal distinct points of agree- with Gleicheinacea , Osmundacea , Marattiacea , Ophioglossea , and ...
Seite 127
... ment of its particles into a homogeneous anisotropic solid is not an essential but an accident which may occur under certain favourable conditions . The essential characteristic of a crystal is , according to his view , the power of ...
... ment of its particles into a homogeneous anisotropic solid is not an essential but an accident which may occur under certain favourable conditions . The essential characteristic of a crystal is , according to his view , the power of ...
Seite 170
... ment , though not improbable , rests on any sound founda- tion . So far our inquiry leads one to suspect a certain degree of physical inferiority in the blond constitution , which may possibly be operating towards the gradual diminution ...
... ment , though not improbable , rests on any sound founda- tion . So far our inquiry leads one to suspect a certain degree of physical inferiority in the blond constitution , which may possibly be operating towards the gradual diminution ...
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acid action adult Algæ ancestral animals anthocyan appears Arachnids Archief beds body cane carbonic acid Carboniferous cause cellulose cent centrosome changes character chlorophyll Choanoflagellata ciliated ciliated cells cœlenterates collar cells colour critical temperature curve described diatoms disease ectoderm effect endoderm epithelium evidence existence experiments fact fibres fibrinogen formation fossil Galeodes ganglion genera germinated glands Glossopteris Glossopteris flora Gondwana important increase isothermal Java Journ lakes larva larvæ latter layer limbs liquid lower lumbar membrane ment metabolism Metazoa method mixture modification molecules nature nerve observations obtained occur organs origin ovum parasitic pectate pectic pectic acid pectose phenomena physiological plants present pressure probably produced protoplasm Protozoa recent regarded region remarkable rocks salts seeds segments serum similar soluble solution species specimens sponges stimulation structure substance sugar sugar-cane surface tail theory tion tissues tube vapour variation varieties Waals zoospores