An Introduction to the Study of Zoology, Illustrated by the CrayfishAppleton, 1906 - 371 pagini |
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Pagina 8
... the waters are liable to freeze , the burrows are deeper and further from the surface than otherwise . Where the soil , through which a streamn haunted by crayfishes runs , is soft 8 THE NATURAL HISTORY OF THE COMMON CRAYFISH .
... the waters are liable to freeze , the burrows are deeper and further from the surface than otherwise . Where the soil , through which a streamn haunted by crayfishes runs , is soft 8 THE NATURAL HISTORY OF THE COMMON CRAYFISH .
Pagina 16
... this much about the origin of the names of the crayfish , we may next proceed to consider those points which an observant Naturalist , who did not care to go far beyond the surface of things , 16 THE NATURAL HISTORY OF THE COMMON CRAYFISH .
... this much about the origin of the names of the crayfish , we may next proceed to consider those points which an observant Naturalist , who did not care to go far beyond the surface of things , 16 THE NATURAL HISTORY OF THE COMMON CRAYFISH .
Pagina 17
Thomas Henry Huxley. care to go far beyond the surface of things , would find to notice in the animal itself . Probably the most conspicuous peculiarity of the cray- fish , to any one who is familiar only with the higher animals , is the ...
Thomas Henry Huxley. care to go far beyond the surface of things , would find to notice in the animal itself . Probably the most conspicuous peculiarity of the cray- fish , to any one who is familiar only with the higher animals , is the ...
Pagina 20
... surface is examined carefully , it will be found to be divided into as many transverse bands , or segments , as there are pairs of legs ( fig . 3 ) ; and , moreover , the hindermost of these segments is not firmly united with the rest ...
... surface is examined carefully , it will be found to be divided into as many transverse bands , or segments , as there are pairs of legs ( fig . 3 ) ; and , moreover , the hindermost of these segments is not firmly united with the rest ...
Pagina 33
... surface of the true integument . The cuticular skeleton of the crayfish , in fact , is not even so much a part of the skin as the cast of a snake , or as our own nails . For these are composed of coherent , formed parts of the epidermis ...
... surface of the true integument . The cuticular skeleton of the crayfish , in fact , is not even so much a part of the skin as the cast of a snake , or as our own nails . For these are composed of coherent , formed parts of the epidermis ...
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