An Introduction to the study of zoology, illustrated by the crayfishD. Appleton, 1901 - 371 pagini |
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Pagina vi
... fish , " well says Roesel von Rosenhof , " it is yet so full of wonders that the greatest naturalist may be puzzled to give a clear account of it . " But only PREFACE . vii the broad facts of the case are Vi PREFACE .
... fish , " well says Roesel von Rosenhof , " it is yet so full of wonders that the greatest naturalist may be puzzled to give a clear account of it . " But only PREFACE . vii the broad facts of the case are Vi PREFACE .
Pagina vi
... fish , " well says Roesel von Rosenhof , " it is yet so full of wonders that the greatest naturalist may be puzzled to give a clear account of it . " But only PREFACE . vii the broad facts of the case are Vi PREFACE .
... fish , " well says Roesel von Rosenhof , " it is yet so full of wonders that the greatest naturalist may be puzzled to give a clear account of it . " But only PREFACE . vii the broad facts of the case are Vi PREFACE .
Pagina vii
Thomas Henry Huxley. PREFACE . vii the broad facts of the case are of fundamental im- portance ; and , so far as these are concerned , I ven- ture to hope that no error has slipped into my statement of them . As for the details , it must ...
Thomas Henry Huxley. PREFACE . vii the broad facts of the case are of fundamental im- portance ; and , so far as these are concerned , I ven- ture to hope that no error has slipped into my statement of them . As for the details , it must ...
Pagina 2
... broad truths of science can be justified . The conclusion drawn from due consideration of the nature of the case is verified by historical inquiry ; and the historian of every science traces back its roots to the primary stock of common ...
... broad truths of science can be justified . The conclusion drawn from due consideration of the nature of the case is verified by historical inquiry ; and the historian of every science traces back its roots to the primary stock of common ...
Pagina 7
... broad , fan - shaped flipper , which terminates the hinder end of the body ( fig . 1 , t , 20 ) . In front of the four pairs of legs , which are used in walking , there is a pair of limbs of a much more massive character , each of which ...
... broad , fan - shaped flipper , which terminates the hinder end of the body ( fig . 1 , t , 20 ) . In front of the four pairs of legs , which are used in walking , there is a pair of limbs of a much more massive character , each of which ...
Termeni și expresii frecvente
abdomen abdominal appendages abdominal somite acid alimentary ambulatory limbs animals antenna antennule aperture appears artery arthrobranchiæ Astacine attached basal joint base become blastomeres blood body branchiæ branchial cavity branchial chamber branchial filaments branchiostegite canal carapace cephalic cephalothorax cervical groove chitinous convex corpuscles coxopodite crayfish Crustacea cuticle cuticular division ecdysis ectoderm ectostracum edge endopodite endosternites epiblast epimeral epipodite exopodite exoskeleton external fact fibres food-yelk forceps front ganglion gastrolith gills gives rise green gland hind-gut hypoblast inner lamina lateral less lobes lobster longitudinal male mandibles maxillipede membrane metameres morphological muscles muscular Nauplius nerve nobilis nucleated cells nuclei organs outer ovum pairs plate pleura podobranchiæ portion posterior present procephalic protopodite region ridge rostrum scaphognathite segments seta setæ side somite species spines stem sternal sternum stomach structure substance surface telson tergal tergum terminal thoracic thoracic limbs thoracic somite tissue transverse wall yelk