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Principles of General and Comparative Physiology: Intended as an ...
William Benjamin Carpenter
No preview available - 2017
action activity adapted already analogy animals apparatus appear arrangement atmosphere becomes blood body cavity cells cellular changes character circulation closely common completely composed condition connected considerable consists constitute contained continued corresponding dependent distinct division effected electrical entirely essential evident exhibit existence external extremities fact fibres fishes fluid functions heat higher important increased individual influence Insects instances kind kingdom laws leaves less light living lower maintained manner matter means membrane minute motion nature nervous nutritive observed organised organs particular pass perfect performed period plants portion possess present principal probably produced properties proportion regarded relation remains remarkable reproductive result secretion seems seen separate shown side similar simple sometimes species stem structure supply surface takes place temperature termed tion tissue trace tribes trunk tubes usually vegetable vessels vital whilst whole
Page 60 - I have counted above 10,000,000), so subtile (they are scarcely visible to the naked eye, and often resemble thin smoke), so light (raised, perhaps, by evaporation into the atmosphere), and are dispersed in so many ways (by the attraction of the sun, by insects, wind, elasticity, adhesion, &c.), that it is difficult to conceive a place from which they can be excluded.
Page 420 - ... inches. It was found that the Greyhounds could not support the fatigues of a long chase in this attenuated atmosphere ; and before they could come up with their prey, they lay down gasping for breath ; but these same animals have produced whelps, which have grown up, and...
Page 178 - There is a certain antagonism between the nutritive and reproductive functions, the one being exercised at the expense of the other. The reproductive apparatus derives the materials of its operations through the nutritive system, and is entirely dependent upon it for the continuance of its functions.
Page 195 - — " If into a tube, closed at one end with a piece of bladder or other membrane, be put a solution of gum or sugar, and the closed end be immersed in water, a passage of fluid will take place from the exterior to the interior of the tube, through the membranous septum ; so that the quantity of the combined solution will be greatly increased, its strength being proportionably diminished. At the same time, there will be a counter-current in the opposite direction ; a portion of the gummy or saccharine...
Page 139 - raised in the garden of the Horticultural Society from seeds taken from the stomach of a man, whose skeleton was found thirty feet below the surface of the earth, at the bottom of a barrow which was opened near Dorchester. He had been buried with some coins of the Emperor Hadrian ; and it is therefore probable that the seeds were sixteen or seventeen hundred years old...
Page 2 - But a judicious and careful system of observation will almost supply the place of experiment ; for the ever- varying forms of organised beings by which we are surrounded, and the constantly-changing conditions in which they exist, present us with such numerous and different combinations of causes and effects, that it must be the fault of our mode of study if we do not arrive at some tolerably definite conclusions as to their mutual relations. In the language of Cuvier, the different forms of animals...