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adult amitosis animals atrophy baby become birth blood corpuscles body bone brain cartilage cent cerebellum chick child condition Curve Showing cycle cytomorphosis Daily Percentage Increments death of cells decline differentiation Elie Metchnikoff embryo entoderm fact fibrils figures function fundamental germ germ cells gland grow guinea-pig hair half days Harvard Medical School human illustrations increase Increments in Weight intestine layer lecture living mammals material Metazoa Metchnikoff microscopic millimetres mitotic months muscle fibres nature nerve cells nucleus number of cells observations occurs old age organism ovum period phagocytes phenomena physiological picture power of growth present problem produced Professor progress protoplasm Protozoa rabbit rabbit embryo rapid rate of growth recognise regeneration rejuvenation represents result retina Richard Hertwig salamander Science scientific Section segmentation senescence single cell skin spinal cord stage structure substance Syncytium theory thing tion tissue Ueber unicellular various volume
Page 281 - Every effort will be made to maintain the standard set by the first volumes, until the series shall represent the more important aspects of contemporary science. The advance of science has been so rapid, and its place in modern life has become so dominant, that it is needful to revise continually the statement of its results, and to put these in a form that is intelligible and attractive. The man of science can himself be a specialist in one department only, yet it is necessary for him to keep abreast...
Page 284 - Climate — Considered Especially in Relation to Man. By ROBERT DECOURCY WARD, Assistant Professor of Climatology in Harvard University. 8°. Illustrated. Net, $2.00. This volume is intended for persons who have not had special training in the technicalities of climatology. Climate covers a wholly different field from that included in the meteorological text-books. It handles broad questions of climate in a way which has not been attempted in a single volume. The needs of the teacher and student...
Page 250 - First, rejuvenation depends on the increase of the nuclei. Second, senescence depends on the increase of the protoplasm, and on the differentiation of the cells. Third, the rate of growth depends on the degree of senescence. Fourth, senescence is at its maximum in the very young stages, and the rate of senescence diminishes with age.
Page 282 - Volcanoes of North America," etc. Fully illustrated. 8°, $2.00. "There has not been in the last few years until the present book any authoritative, broad resume on the subject, modified and deepened as it has been by modern research and reflection, which is couched in language suitable for the multitude. . . . The text is as entertaining as it is instructive.
Page 283 - Professor Brinton his shown in this volume an intimate and appreciative knowledge of all the important anthropological theories. No one seems to have been better acquainted with the very great body of facts represented by these sciences.
Page 283 - No student of this most interesting phasfe of the problems of life can afford to remain in ignorance of the wide range of facts and the suggestive series of interpretations which 'Professor Loeb has brought together in this volume." — JOSEPH JASTRoW, in the Chicago Dial.
Page 282 - A timely and useful volume. . , . The author wields a pleasing pen and knows how to make the subject attractive. . . . The work is calculated to spread among its readers an attraction to the science of anthropology. The author's observations are exceedingly genuine and his descriptions are vivid.
Page 235 - Among the most ardent defenders of the faith in life units is Professor Weismann, whose theories of heredity many of you have heard discussed ; though I doubt if many of you, unless you recall what I said previously, are aware of the fact that the essential part of Weismann's doctrine was the adoption of the theory of germinal continuity originated by Professor Nussbaum, whose name by a strange injustice has been too seldom heard in these discussions.
Page 284 - A book to be set side by side with Huxley,s Essays, whose spirit it carries a step further on the long road towards its goal." — Mail and Express. 16. — The Hygiene of Nerves and Mind in Health and Disease. By AUGUST FOREL, MD, formerly Professor of Psychiatry in the University of Zurich. Authorized Translation. 8°. Net, $2.00. (By mail, $2.20.) A comprehensive and concise summary of the results of science in its chosen field. Its authorship is a guarantee that the statements made are authoritative...