Chemical News and Journal of Industrial Science, Tom 145,Wydanie 3776Chemical news office., 1932 |
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Strona 116
... latter in two pairs ( pectoral and pelvic ) each repre- senting a primitive limb ( ichthyopterygium ) of quadruped animals , endoskeleton very well developed , originally consisting of a notochord with membranes , replaced by a ...
... latter in two pairs ( pectoral and pelvic ) each repre- senting a primitive limb ( ichthyopterygium ) of quadruped animals , endoskeleton very well developed , originally consisting of a notochord with membranes , replaced by a ...
Strona 117
... latter separating to form a definite cœlom , blastopore posterior and dorsal in position , laval form ( tadpole ) , at first with the yolk sac as swelling of lower surface , very distinct from adult , especially where the latter is ...
... latter separating to form a definite cœlom , blastopore posterior and dorsal in position , laval form ( tadpole ) , at first with the yolk sac as swelling of lower surface , very distinct from adult , especially where the latter is ...
Strona 118
... latter forming a cloaca with the urogenital opening , kidney passing through pro- meso- and meta - nephridial stages , single ovary only , often present in adult , rarely external organs of sex present ( e.g. , in ducks , geese ...
... latter forming a cloaca with the urogenital opening , kidney passing through pro- meso- and meta - nephridial stages , single ovary only , often present in adult , rarely external organs of sex present ( e.g. , in ducks , geese ...
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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