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acid angle animals appendage artery articulated attached birds blood body bones bony branchial called canal carbon carbonic acid cartilage cartilaginous caudal cavity centrum character chyle coalesced consists constitute convex crocodile crocodilia dentine developed digits dorsal elements enamel exists expanded extends extremity fibres fibrine fins fishes fluid frontal functions glottis haemal arch haemal spine haemapophyses head human humerus incisors insects kind kingdom lacteal larynx length limbs lower jaw lungs mammals matter maxillary membrane modifications molar motion mouth muscles muscular nasal nature neural arch neural spine occipital organs osseous ossified outer parietal peculiar phalanges physiology plates pleurapophyses posterior premolars produced proportion quadrupeds remarkable reptiles ribs scapula segment serpents side skeleton skull sound species sternum structure substance surface tail teeth termed tissue toes tongue tooth transverse tribes trunk tube ulna upper vegetable veins vertebra vessels vibrations vocal cords vocal ligaments voice windpipe
Seite 198 - It is true that the serpent has no limbs, yet it can outclimb the monkey, outswim the fish, outleap the jerboa, and, suddenly loosing the close coils of its crouching spiral, it can spring into the air and seize the bird upon the wing: all these creatures have been observed to fall its prey.
Seite 301 - ... as is also that tooth in the lower jaw which, in opposing it, passes in front of its crown when the mouth is closed. The other teeth of the first set are the ' deciduous molars ; ' the teeth which displace and succeed them vertically are the ' premolars ; ' the more posterior teeth, which are not displaced by vertical successors, are the ' molars,
Seite 32 - ... truth of a proposition postulated, by showing that the deductions from it are true, requires that the truth of the deductions shall be shown in some way that does not directly or indirectly assume the truth of the proposition postulated. If, setting out with the axioms of Euclid, we deduce the truths that " the angle in a semicircle is a right angle...
Seite 310 - Beyond these two islands lies the sea of Andaman ; the people on this coast eat human flesh quite raw; their complexion is black, their hair frizzled, their countenance and eyes frightful, their feet are very large, and almost a cubit in length, and they go quite naked.
Seite 264 - ... instruments for uprooting or cutting down trees, or for transport and working of building materials ; they are characteristic of age and sex ; and in man they have secondary relations subservient to beauty and to speech. Teeth are always intimately related to the food and habits of the animal, and are therefore highly interesting to the physiologist : they form for the same reason important guides to the naturalist in the classification of animals...
Seite 198 - ... fall its prey. The serpent has neither hands nor talons, yet it can outwrestle the athlete, and crush the tiger in the embrace of its ponderous overlapping folds.
Seite 317 - Besides these cars they have a superior kind of vehicle upon two wheels, covered likewise with black felt, and so effectually as to protect those within it from wet, during a whole day of rain.
Seite 186 - ... to the bottom ; if the right pectoral fin only be cut off, the fish leans to that side ; if the ventral fin on...