. A text-book of animal physiology [microform] : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. 550 ANIMAL rise to certain molecular changes which enable the mind or the ego to have a perception proper; which, when taken in con- nection with numerous past experiences of this and other senses, furnishes the material for a sensory judg- ment. The chief events are, after
. A text-book of animal physiology [microform] : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. 550 ANIMAL rise to certain molecular changes which enable the mind or the ego to have a perception proper; which, when taken in con- nection with numerous past experiences of this and other senses, furnishes the material for a sensory judg- ment. The chief events are, after all, internal, and hence it is found that the higher in the scale the animal ranks, the more developed its nervous centers, espe- cially its brain, and the more it is able to capitalize its sensory impulses; also the greater the degree of possible improvement by Fio. »wm with saaguon odb (O) benerth • experience, a difference well (^tfcJSmtST'^''""'**"''"'''*^ seen in blind men whose ability to succeed in life without vision is largely in proportion to their innate and acquired mental powers. Inasmuch as all cells require rest, one would expect that under constant stimulation fatigue would soon result and perceptions be imperfect. Hence it happens that all the senses fail when exercised, even for but a short pe- riod, without change of stimulus leading to alteration of con- dition in the central cells. The change need not be one of en- tire rest, but merely a new form of exercise. Hence the fresh- ness experienced by a change of view on passing through beau- tiful scenery. Exhaustion may not be confined wholly to the central ner ^e- cells, but there can be little doubt that they are the most af- fected. Since also there must be a certain momentum, so to speak, to molecular activity, it is not surprising that we find that the sensation outlasts the stimulus for a brief period; and this applies to all the senses, and necessarily determines the rapidi
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Keywords: ., bookauthormillswes, bookcentury1800, bookdecade1880, bookyear1889
