Chemical News and Journal of Industrial Science, Tom 145,Wydanie 3776Chemical news office., 1932 |
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Strona 115
... limbs usually pre- sent , segmented in most , often numerous pairs of limbs , some vestigial , some modified in front to form jaws , all transitions being present between jaws and legs , exoskeleton of chitin often imgregnated with ...
... limbs usually pre- sent , segmented in most , often numerous pairs of limbs , some vestigial , some modified in front to form jaws , all transitions being present between jaws and legs , exoskeleton of chitin often imgregnated with ...
Strona 116
... limb ( ichthyopterygium ) of quadruped animals , endoskeleton very well developed , originally consisting of a ... limbs short ( or long in jumping forms ) , endoskeleton originally a notochord with membranes , but being replaced ...
... limb ( ichthyopterygium ) of quadruped animals , endoskeleton very well developed , originally consisting of a ... limbs short ( or long in jumping forms ) , endoskeleton originally a notochord with membranes , but being replaced ...
Strona 117
... limbs re- duced or absent ( e.g. , snakes ) , the body never raised much from the ground on the limbs , the limb differentiated , where present , as in man ( cheiropterygium ) , the head clearly marked off , with sense centres , exo ...
... limbs re- duced or absent ( e.g. , snakes ) , the body never raised much from the ground on the limbs , the limb differentiated , where present , as in man ( cheiropterygium ) , the head clearly marked off , with sense centres , exo ...
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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