Chemical News and Journal of Industrial Science, Tom 145,Wydanie 3776Chemical news office., 1932 |
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Strona 114
... stages of evolution as a distinct system as canals formed as ingrowths from ectoderm at first serving partly as circulatory system , before latter is distinct ; nervous system of nerve ganglia , sense organs primitive , reproduc- tion ...
... stages of evolution as a distinct system as canals formed as ingrowths from ectoderm at first serving partly as circulatory system , before latter is distinct ; nervous system of nerve ganglia , sense organs primitive , reproduc- tion ...
Strona 117
... stages to form bone in the adult , respiratory organs , lungs , nervous system tubular , dorsal , with small brain and paired peripheral nerves of which there are twelve cranial pairs , striped muscles not al- together seriated ...
... stages to form bone in the adult , respiratory organs , lungs , nervous system tubular , dorsal , with small brain and paired peripheral nerves of which there are twelve cranial pairs , striped muscles not al- together seriated ...
Strona 118
... stages , single ovary only , often present in adult , rarely external organs of sex present ( e.g. , in ducks , geese , ostriches ) , embryo discoid , embryonic membranes and development as in reptiles , but egg shell always quite hard ...
... stages , single ovary only , often present in adult , rarely external organs of sex present ( e.g. , in ducks , geese , ostriches ) , embryo discoid , embryonic membranes and development as in reptiles , but egg shell always quite hard ...
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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