An Introduction to the Study of Zoology, Illustrated by the CrayfishAppleton, 1906 - 371 pagini |
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Pagina 34
... become distended ; in all probability , in consequence of the commencing retraction of the limbs into the interior of the exoskeleton of the body . In fact , it has been remarked , that if , at this period , the extremity of one of the ...
... become distended ; in all probability , in consequence of the commencing retraction of the limbs into the interior of the exoskeleton of the body . In fact , it has been remarked , that if , at this period , the extremity of one of the ...
Pagina 67
... become bigger and more numerous in the middle and lower parts . In fact , few glands are better fitted for the study of the manner in which secretion is effected than the crayfish's liver . We may now consider the alimentary machinery ...
... become bigger and more numerous in the middle and lower parts . In fact , few glands are better fitted for the study of the manner in which secretion is effected than the crayfish's liver . We may now consider the alimentary machinery ...
Pagina 68
... size . Sometimes , however , there are a good many minute fragments of vegetable tissue . The blood of which the nutritive elements of the food have thus become integral parts , is a clear fluid 68 THE PHYSIOLOGY OF THE COMMON CRAYFISH .
... size . Sometimes , however , there are a good many minute fragments of vegetable tissue . The blood of which the nutritive elements of the food have thus become integral parts , is a clear fluid 68 THE PHYSIOLOGY OF THE COMMON CRAYFISH .
Pagina 69
Thomas Henry Huxley. have thus become integral parts , is a clear fluid , either colourless , or of a pale neutral tint or reddish hue , which , to the naked eye , appears like so much water . But if subjected to microscopic examination ...
Thomas Henry Huxley. have thus become integral parts , is a clear fluid , either colourless , or of a pale neutral tint or reddish hue , which , to the naked eye , appears like so much water . But if subjected to microscopic examination ...
Pagina 78
... become modified and has given off a large folded lamina from its inner and posterior face . The branchia now described are arranged in sets of three for each of the thoracic limbs , from the third maxillipede to the last but one ...
... become modified and has given off a large folded lamina from its inner and posterior face . The branchia now described are arranged in sets of three for each of the thoracic limbs , from the third maxillipede to the last but one ...
Alte ediții - Afișează-le pe toate
An Introduction to the Study of Zoology, Illustrated by the Crayfish Thomas Henry Huxley Vizualizare completă - 1895 |
An Introduction to the Study of Zoology, Illustrated by the Crayfish Thomas Henry Huxley Vizualizare completă - 1902 |
Termeni și expresii frecvente
abdomen abdominal appendages abdominal somites ambulatory limbs Amurland animals antenna antennule aperture appears artery arthrobranchiæ Astacine Astacus fluviatilis Astacus torrentium attached basal joint blastomeres blood body branchiæ branchial cavity carapace cardiac cavity cephalothorax cervical groove chelate chitinous corpuscles coxopodite cray Crustacea cuticle cuticular division ecdysis Écrevisses edge endopodite English crayfish epiblast epipodite exopodite exoskeleton eye-stalk fact female filaments fluviatilis.-A forceps front ganglia ganglion gastrolith gills give rise green gland hind-gut hinder hypoblast Illustrations inner integument lateral leptodactylus less lobster longitudinal male mid-gut middle modified morphological muscle muscular nerve fibres nobilis noble crayfish nucleated cells nuclei organs ossicle outer pairs plate pleura podobranchiæ portion posterior prawns present region ridge rostrum segments septal lines setæ side somite species spermatozoa spines sternal sternum stomach structure substance surface swimmerets telson tergal tergum terminal thoracic thoracic limbs thoracic somite tissue transverse wall yelk zone