Chemical News and Journal of Industrial Science, Tom 145,Wydanie 3776Chemical news office., 1932 |
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Strona 113
... bodies unsegmented and micro- scopic in size , homologous with single cells , sometimes associated in colonies in ... body cavity ( archenteron ) which may be sub - divided but is never surrounded by a space ( cœlom ) , endoskeleton ...
... bodies unsegmented and micro- scopic in size , homologous with single cells , sometimes associated in colonies in ... body cavity ( archenteron ) which may be sub - divided but is never surrounded by a space ( cœlom ) , endoskeleton ...
Strona 115
... body cavities , the mantle cavity being particularly characteristic and some- times used like a womb for hatching the young . The shell alone repeats the hollow construction , and has from the earliest times . been considered a symbol ...
... body cavities , the mantle cavity being particularly characteristic and some- times used like a womb for hatching the young . The shell alone repeats the hollow construction , and has from the earliest times . been considered a symbol ...
Strona 117
... body bilateral , sometimes deeper than wide , ' internally segmented , ex- ternally divisible into head , neck , trunk and tail , of which the neck is very clearly marked ( e.g. , tortoise ) or the whole body is more or less neck like ...
... body bilateral , sometimes deeper than wide , ' internally segmented , ex- ternally divisible into head , neck , trunk and tail , of which the neck is very clearly marked ( e.g. , tortoise ) or the whole body is more or less neck like ...
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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