다른 사람들의 의견 - 서평 쓰기
서평을 찾을 수 없습니다.
기타 출판본 - 모두 보기
animal aperture aquarium Bashford Dean Beale's Beaumont bioplasm blood-corpuscle Bulletin Calotermes capsule cell doctrine cell-wall chambers Charles F Chrysochus auratus collodion cover-glass Cretaceous Cristellaria d'Orb December denticles Devoe diameter Diatoms Doctor Beale E. A. Schultze Eleocharis enclosing Eutermes F. W. Devoe fact fermentation film fish Foraminifera fungus galleries genus germinal matter glass Greensand Hay-Fever hypha inch insect Isthmus J. D. Hyatt J. L. Zabriskie Jersey Journal larva living matter mandibles mass material mounted Natural Naturalist nest NEW-YORK MICROSCOPICAL SOCIETY Nodosaria nucleus OBJECTS EXHIBITED October oogonium oospheres organism ovipositor P. H. Dudley pabulum persons present Phonemus plant President Proceedings Professor Huxley protoplasm protoplasm theory queens rare Riederer Rotalia Saprolegnia Science Scirpus sections shell showing side slide species specimens sporangium spores stained Stephen Helm structure structureless substance sutures Termites thallus Timber Creek tissues tracheids tube turpentine vegetable vital wood zoospores
16 페이지 - But expectation is permissible where belief is not, and if it were given me to look beyond the abyss of geologically recorded time, to the still more remote period when the earth was passing through physical and chemical conditions which it can no more see again than a man can recall his infancy, I should expect to be a witness of the evolution of living protoplasm from not living matter.
107 페이지 - Beast and fowl, reptile and fish, mollusk, worm, and polype, are all composed of structural units of the same character, namely, masses of protoplasm with a nucleus.
108 페이지 - Debemur morti nos nostraque," with a profounder meaning than the Roman poet attached to that melancholy line. Under whatever disguise it takes refuge, whether fungus or oak, worm or man, the living protoplasm not only ultimately dies and is resolved into its mineral and lifeless constituents, but is always dying, and, strange as the paradox may sound, could not live unless it died.
106 페이지 - Thus it becomes clear that all living powers are cognate, and that all living forms are fundamentally of one character. The researches of the chemist have revealed a no less striking uniformity of material composition in living matter.
108 페이지 - I shall probably have recourse to the substance commonly called mutton, for the purpose of stretching it back to its original size. Now this mutton was once the living protoplasm, more or less modified, of another animal — a sheep. As I shall eat it, it is the same matter altered, not only by death, but by exposure to sundry artificial operations in the process of cooking.
110 페이지 - Withdraw any one of these three from the world, and all vital phenomena come to an end. They are as necessary to the protoplasm of the plant, as the protoplasm of the plant is to that of the animal. Carbon, hydrogen, oxygen, and nitrogen are all lifeless bodies. Of these...
107 페이지 - And now, what is the ultimate fate, and what the origin, of the matter of life? Is it, as some of the older naturalists supposed, diffused throughout the universe in molecules, which are indestructible and unchangeable in themselves; but, iu endless transmigration, unite in innumerable permutations, into the diversified forms of life we know? Or is the matter of life composed of ordinary matter; differing from it only in the manner in which its atoms are aggregated.
107 페이지 - Thus a nucleated mass of protoplasm turns out to be what may be termed the structural unit of the human body. As a matter of fact, the body, in its earliest state, is a mere multiple of such units ; and, in its perfect condition, it is a multiple of such units, variously modified.
16 페이지 - With organic chemistry, molecular physics, and physiology yet in their infancy, and every day making prodigious strides, I think it would be the height of presumption for any man to say that the conditions under which matter assumes the properties we call " vital" may not, some day> be artificially brought together.