An Introduction to the study of zoology, illustrated by the crayfishD. Appleton, 1901 - 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 69
Thomas Henry Huxley. THE BLOOD AND ITS CORPUSCLES . 69 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 ...
Thomas Henry Huxley. THE BLOOD AND ITS CORPUSCLES . 69 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 ...
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
... Sometimes , however , there are a good many minute fragments of vegetable tissue . The blood of which the nutritive elements of the food THE BLOOD AND ITS CORPUSCLES . 69 have thus become 68 THE PHYSIOLOGY OF THE COMMON CRAYFISH .
... Sometimes , however , there are a good many minute fragments of vegetable tissue . The blood of which the nutritive elements of the food THE BLOOD AND ITS CORPUSCLES . 69 have thus become 68 THE PHYSIOLOGY OF THE COMMON CRAYFISH .
Pagina 77
... Sometimes , however , there are a good many minute fragments of vegetable tissue . The blood of which the nutritive elements of the food THE BLOOD AND ITS CORPUSCLES . 69 have thus become 68 THE PHYSIOLOGY OF THE COMMON CRAYFISH .
... Sometimes , however , there are a good many minute fragments of vegetable tissue . The blood of which the nutritive elements of the food THE BLOOD AND ITS CORPUSCLES . 69 have thus become 68 THE PHYSIOLOGY OF THE COMMON CRAYFISH .
Termeni și expresii frecvente
abdominal appendages abdominal somite ambulatory limbs animals antenna antennule aperture appears artery arthrobranchiæ Astacina Astacine Astacus fluviatilis Astacus torrentium attached basal joint base blood body branchiæ branchial cavity branchial chamber branchial filaments branchiostegite canal carapace cavity cephalothorax cervical groove chelate chitinous convex corpuscles coxopodite Crustacea cuticle cuticular developed distinct division ecdysis edge endopodite endosternites English crayfish epiblast epimera epipodite exopodite exoskeleton external eye-stalks fact fibres forceps front gastrolith gastrula genus gills gives rise green gland hind-gut inner lamina latter leptodactylus less lobster male mandible maxillipede metameres modified morphological muscles Nauplius nerve nobilis noble crayfish nucleated cells organs outer ovum pairs Penæus plate pleura pleurobranchiæ podo podobranchiæ portion posterior Potamobiida prawns present procephalic protopodite region ridge rostrum scaphognathite seta setæ side somite species spines sternal sternum stomach structure substance surface telson tergal tergum terminal thoracic thoracic limbs thoracic somite tissue transverse wall