Chemical News and Journal of Industrial Science, Tom 145,Wydanie 3776Chemical news office., 1932 |
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Strona 114
... primitive form thereof appears , although the mesoderm may contain spaces ; bodies soft , no skeleton present other than the mesoderm which may be firm owing to turgidity , sex glands highly developed , in some cases the gonads forming ...
... primitive form thereof appears , although the mesoderm may contain spaces ; bodies soft , no skeleton present other than the mesoderm which may be firm owing to turgidity , sex glands highly developed , in some cases the gonads forming ...
Strona 116
... primitive limb ( ichthyopterygium ) of quadruped animals , endoskeleton very well developed , originally consisting of a notochord with membranes , replaced by a cartilage skeleton in the adult , or by cartilage and then bone ...
... primitive limb ( ichthyopterygium ) of quadruped animals , endoskeleton very well developed , originally consisting of a notochord with membranes , replaced by a cartilage skeleton in the adult , or by cartilage and then bone ...
Strona 119
... primitive gut , coelomic walls muscular , nerve ring around the central gut , with ganglia and peripheral nerves , excretory system ( Tiedemann's organ ? ) little known but different from that of other groups , individuals nearly always ...
... primitive gut , coelomic walls muscular , nerve ring around the central gut , with ganglia and peripheral nerves , excretory system ( Tiedemann's organ ? ) little known but different from that of other groups , individuals nearly always ...
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added adult alimentary canal analogy analysis animals Applications arranged atom becoming bilateral Black blastopore body bone British Canada carbon cavities character Chemical chemistry circulatory system clearly cœlom compared conception consider constructed containing definite described developed discoveries distinct dominant dorsal Drebbel ducts element embryo exact excretory experiments external extract force fundamental gills give given groups gypsum head heart higher ideas important included industry interest internally known laboratory latter Lavoisier less light limbs London lungs malt material means ment mesoderm method molecule mouth muscle National Mark nature neck nervous system obtained opening organic molecule organs original pairs Paris passing Patent Phylum physical placenta plant position possible present Priestley primitive problem produce quantitative Ratio reproduction segments sense separate short skeleton sometimes stages structure substances tail tion trunk types urogenital usually various vegetative whole