. 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. changes may the increased to regard the cted series of stem so as to iw individual, is effected by id organism; while that by h the agency le adult mam- lysiologically is a gradual : in changes ablishment of a-uterine life. 9 great store- ) of all waste I to the moth- ar way nutri- of th
. 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. changes may the increased to regard the cted series of stem so as to iw individual, is effected by id organism; while that by h the agency le adult mam- lysiologically is a gradual : in changes ablishment of a-uterine life. 9 great store- ) of all waste I to the moth- ar way nutri- of the foetus, fttory, and ex- male elements of the penis is gan composed lit of the peri- ract, aided by ) spermatozoa, ake up the es- licated by the nnection with m movements >able that the in a direction Ells. in the higher that receives I to *1"» sexual the itrol of may be either ORGANIC EVOLUTION RECONSIDERED. 127 OROANIC EVOLUTION RECJONSIDERED. The study of reproduction has prepared the student for the comprehension of certain views of the origin of the forms of life which could not be as profitably considered before. While the great majority of biologists are convinced that there has been a gradual evolution of more complex organisms from simpler ones, and while most believe that Darwin's the- ory furnishes some of the elements of a solution of the problem as to how this has occurred, many still feel that the whole ex- planation was not furnished by that great naturalist. Accordingly, we shall notice very briefly a few of the more important contributions to this subject .rr^ce Darwin's views were published. In America, under the influence of the writings of Cope and Hyatt, a school of evolutionists has been formed, holding doc- trines that constitute a modification of those announced in cruder form by Lamarck, hence termed neo-Lamarckianism. These authors have imported consciousness into the list of factors of organic evolution and given it a prominent place. The
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Keywords: ., bookauthormillswes, bookcentury1800, bookdecade1880, bookyear1889
