Toilers in the SeaSociety for Promoting Christian Knowledge, 1889 - 373 pages |
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Page 39
... reproduction requires further investigation , since little more is known than was announced in 1856 , and further confirmed in 1861 , of the production of living young by two or three species . " Remarking that an individual had become ...
... reproduction requires further investigation , since little more is known than was announced in 1856 , and further confirmed in 1861 , of the production of living young by two or three species . " Remarking that an individual had become ...
Page 40
... of 1 " Observations on Reproduction of the Rhizopoda , " by Prof. Max Schultze . Abstracted in Quart . Journ . Micr . Sci . , vol . v . ( 1857 ) p . 220 . sea - water . Noticing suspicious circumstances in some of 40 TOILERS IN THE SEA .
... of 1 " Observations on Reproduction of the Rhizopoda , " by Prof. Max Schultze . Abstracted in Quart . Journ . Micr . Sci . , vol . v . ( 1857 ) p . 220 . sea - water . Noticing suspicious circumstances in some of 40 TOILERS IN THE SEA .
Page 42
... Reproduction by gemmation is as probable in the Foraminifera as in Difflugia , in which latter it has been observed . When these animals are obtained in considerable numbers , the formation of colonies by gemmation ( or budding ) may ...
... Reproduction by gemmation is as probable in the Foraminifera as in Difflugia , in which latter it has been observed . When these animals are obtained in considerable numbers , the formation of colonies by gemmation ( or budding ) may ...
Page 79
... reproduction . Other appearances have also been detailed , from which it has been inferred that true sexual products are formed in the in- terior of the bodies , and that spermatozoids are liberated and ovules fertilised . " Nicolet has ...
... reproduction . Other appearances have also been detailed , from which it has been inferred that true sexual products are formed in the in- terior of the bodies , and that spermatozoids are liberated and ovules fertilised . " Nicolet has ...
Page 83
... reproduction of the Poly- cystina : - It was not assumed that we had any evidence in favour of sexuality in the reproduction of these little animals , or , in fact , any supposition of sexuality in a group of such simple organisation as ...
... reproduction of the Poly- cystina : - It was not assumed that we had any evidence in favour of sexuality in the reproduction of these little animals , or , in fact , any supposition of sexuality in a group of such simple organisation as ...
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Expressions et termes fréquents
Actinophrys algæ annelids appear atolls barrier reefs beautiful become body boring sponge bottom branches bristles budding calcareous canals cavity cell central capsule chalk chambers Chelura cilia Cliona Cloth boards coast colony colour consists coral islands coral reefs Dana Darwin dead delicate deposit depth developed disk dredge eggs enclosed excavated fact fathoms Fcap feet filaments flagellum fluid Flustra Foraminifera fringing reef Gorgonia granules growth History horny Hydroid hypothesis inch Infusoria inhabit lagoon larvæ layer less living marine mass matter membrane microscope minute mollusk monads mouth naturalists nature observed ocean organs outer particles perforated phosphorescence plates Polycystina polypary polypes portion Professor protoplasm pseudopodia Radiolaria reproduction resemble rock sand sarcode says sea-fans sea-pens sea-water secreted shells shore side skeleton sometimes species spicules stomach structure substance surface tentacles thin tion tube vegetable Wallich whilst whole worm zooids zoophytes zoospores
Fréquemment cités
Page 383 - ANCIENT HISTORY FROM THE MONUMENTS. This Series of Books is chiefly intended to illustrate the Sacred Scriptures by the results of recent Monumental Researches in the East. Fcap. 8vo, cloth boards, 2s. each. Assyria, -from the Earliest Times to the Fall of Nineveh.
Page 366 - It is often urged, in respect to some scientific conclusion, that, after all, it is only an hypothesis. But what more have we to guide us in nine-tenths of the most important affairs of daily life than hypotheses, and often very ill-based ones? So that in science, where the evidence of a hypothesis is subjected to the most rigid examination, we may rightly pursue the same course.
Page 383 - Assyria, from the Earliest Times to the Fall of Nineveh. By the late GEORGE SMITH, Esq., of the British Museum.
Page 28 - ... a little particle of apparently homogeneous jelly changing itself into a greater variety of forms than the fabled Proteus, laying hold of its food without members, swallowing it without a mouth, digesting it without a stomach, appropriating its nutritious material without absorbent vessels or a circulating system, moving from place to place without muscles, feeling (if it has any power to do so) without nerves, multiplying itself without eggs ; and not only this, but in many instances forming...
Page 366 - ... to guide us in nine-tenths of the most important affairs of daily life than hypotheses, and often very ill-based ones? So that in science, where the evidence of an hypothesis is subjected to the most rigid examination, we may rightly pursue the same course. You may have hypotheses and hypotheses. A man may say, if he likes, that the moon is made of green cheese: that is an hypothesis.
Page 366 - ... which is based on sound scientific knowledge is sure to have a corresponding value; and that which is a mere hasty, random guess, is likely to have but little value. Every great step in our progress in discovering causes has been made in exactly the same way as that which I have detailed to you. A person observing the occurrence of certain facts and phenomena asks naturally enough, what process, what kind of operation known to occur in nature...
Page 168 - There breed, and die, and leave a progeny, Still multiplied beyond the reach of numbers, To frame new cells and tombs; then breed and die As all their ancestors had done, — and rest, Hermetically...