Chemical News and Journal of Industrial Science, Tom 145,Wydanie 3776Chemical news office., 1932 |
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Strona 114
... phase in animal evolution in which the alimentary canal first assumes its definitive form , with origin of the anus , in which the circulatory system first becomes evolved as a definite system , in which the cœlom passes through its ...
... phase in animal evolution in which the alimentary canal first assumes its definitive form , with origin of the anus , in which the circulatory system first becomes evolved as a definite system , in which the cœlom passes through its ...
Strona 116
... phase is not . The Fishes are characterised by very numerous vertebræ and other carti- lage or bone segments ; the tail is more im- portant here than in other groups , acting as the chief organ of propulsion . Phylum VIII . AMPHIBIA ...
... phase is not . The Fishes are characterised by very numerous vertebræ and other carti- lage or bone segments ; the tail is more im- portant here than in other groups , acting as the chief organ of propulsion . Phylum VIII . AMPHIBIA ...
Strona 119
... phase , among the 1 Loc cit . cœlenterates , on the principle that each group repeats the whole animal kingdom ... phases of the endoskele- ton . The heart has , however , always been re- garded as the central organ , thus opposing the ...
... phase , among the 1 Loc cit . cœlenterates , on the principle that each group repeats the whole animal kingdom ... phases of the endoskele- ton . The heart has , however , always been re- garded as the central organ , thus opposing the ...
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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