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action angle animals appears arch articulated attached base become birds blood body bones called carbon cavity centrum character close common complete consists constitute contains continually corresponding developed direction distinct divisions effect elements equal example exists expanded extends extremity fishes force four functions give hæmal head human important individual kind kingdom knowledge language larynx length less ligaments living lower matter means membrane mind modifications motion mouth muscles muscular nature neural observation organic origin passes plants plates portion position posterior present produced progress proper proportion reference relation remains remarkable rest ribs segment short side skeleton skull sound species spine structure substance surface teeth termed tissue tooth tribes true trunk truth upper vegetable vertebræ vibrations vocal voice weight whole
Side 200 - 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.
Side 303 - ... 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,
Side 34 - ... 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...
Side 312 - 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.
Side 266 - ... 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...
Side 200 - ... 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.
Side 319 - 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.
Side 188 - ... to the bottom ; if the right pectoral fin only be cut off, the fish leans to that side ; if the ventral fin on...