An Introduction to the Study of Zoology, Illustrated by the CrayfishAppleton, 1906 - 371 pagini |
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Pagina 4
... divided into two main branches , Zoology and Botany . Each of these branches of Biology has passed through the three stages of development , which are common to all the sciences ; and , at the present time , each is in these different ...
... divided into two main branches , Zoology and Botany . Each of these branches of Biology has passed through the three stages of development , which are common to all the sciences ; and , at the present time , each is in these different ...
Pagina 19
... divided in the higher animals , the fore part is termed the cepha- lo - thorax , or head ( cephalon ) and chest ( thorax ) com- bined , while the hinder part receives the name of abdomen . Now the exoskeleton is not of the same ...
... divided in the higher animals , the fore part is termed the cepha- lo - thorax , or head ( cephalon ) and chest ( thorax ) com- bined , while the hinder part receives the name of abdomen . Now the exoskeleton is not of the same ...
Pagina 20
... 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 , but can be moved backwards and forwards through a ...
... 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 , but can be moved backwards and forwards through a ...
Pagina 22
... the body . They are divided into a number of joints , of which one of those near the base is longer than the rest , and strongly toothed along 22 THE NATURAL HISTORY OF THE COMMON CRAYFISH , THE NATURAL HISTORY OF THE COMMON CRAYFISH.
... the body . They are divided into a number of joints , of which one of those near the base is longer than the rest , and strongly toothed along 22 THE NATURAL HISTORY OF THE COMMON CRAYFISH , THE NATURAL HISTORY OF THE COMMON CRAYFISH.
Pagina 51
... almost the whole cavity of the head . It is divided by a constriction into a large anterior chamber ( cs ) , into the under face of which the gullet opens , and a small posterior chamber ( ps THE MACHINERY OF ALIMENTATION . 51.
... almost the whole cavity of the head . It is divided by a constriction into a large anterior chamber ( cs ) , into the under face of which the gullet opens , and a small posterior chamber ( ps THE MACHINERY OF ALIMENTATION . 51.
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