The Popular Science Review: A Quarterly Miscellany of Entertaining and Instructive Articles on Scientific Subjects, Volume 9James Samuelson, Henry Lawson, William Sweetland Dallas Robert Hardwicke, 1870 |
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Página 58
... ciliated tentacles ( fig . 1 , b ) , in the centre of which is placed the mouth . This aperture is , in some cases , closed by a movable lip , and in others by a much more elaborate operculum . The incessant and vigorous play of the cilia ...
... ciliated tentacles ( fig . 1 , b ) , in the centre of which is placed the mouth . This aperture is , in some cases , closed by a movable lip , and in others by a much more elaborate operculum . The incessant and vigorous play of the cilia ...
Página 59
... cilia towards the upper end of the stomach , which has the appearance of being doubled upon itself ; and , after rotating here for a time , they pass through a valvular orifice ( fig . 1 , g ) into the intestine ( fig . 1 , h ) , a long ...
... cilia towards the upper end of the stomach , which has the appearance of being doubled upon itself ; and , after rotating here for a time , they pass through a valvular orifice ( fig . 1 , g ) into the intestine ( fig . 1 , h ) , a long ...
Página 62
... ciliated embryos . Smitt , however , has noticed another mode of reproduction , which he regards as asexual . He describes eggs as occurring within the cell ( of Lepralia Peachii ) , and lying in a loose mass of fatty glo- bules , by ...
... ciliated embryos . Smitt , however , has noticed another mode of reproduction , which he regards as asexual . He describes eggs as occurring within the cell ( of Lepralia Peachii ) , and lying in a loose mass of fatty glo- bules , by ...
Página 63
... cilia are borne on a delicate membranous envelope , within which the solid contents of the body are seen as an opaque white mass . At one pole of the body is placed a some- what horseshoe - shaped opening , at the extremity of which is ...
... cilia are borne on a delicate membranous envelope , within which the solid contents of the body are seen as an opaque white mass . At one pole of the body is placed a some- what horseshoe - shaped opening , at the extremity of which is ...
Página 95
... ciliated infusorium ever appears in the sealed flask , whilst the fluid under the bell - jar soon contains them in abundance . M. Pouchet has also con- ducted a somewhat similar experiment , only one in which the possible disturbing ...
... ciliated infusorium ever appears in the sealed flask , whilst the fluid under the bell - jar soon contains them in abundance . M. Pouchet has also con- ducted a somewhat similar experiment , only one in which the possible disturbing ...
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Palavras e frases frequentes
acid action alcohol alizarine animal anthers appears arrangement astronomers atmosphere body carbonate carbonic acid cells Chemical cilia cleavage clock colour contains corolla corona described diameter direction dredge eclipse effect ethers experiments fact feet flower fortified wines fossil Gatling gun Geological gives glass heat inch insects interest iron isatine Journal karats less light London Martini-Henry mass matter means metal microscope mineral moon moon's nacre natural natural wines nearly nitric acid observations obtained ordinary organ paper pass plants plates pollen polypide portion posterior present prism produced Professor proportion protoplasms quantity rays recent remarkable rendered rocks round Royal schists scientific seen shell side sidereal Society solar species specimens stamens stars stigma structure substance sugar surface tartaric acid temperature theory tion tube tunnel upper valve vessel volatile acid Volvox wine
Passagens conhecidas
Página 414 - NOTES of a COURSE of SEVEN LECTURES On ELECTRICAL PHENOMENA and THEORIES, delivered at the Royal Institution AD 1870.
Página 296 - A Manual of Palaeontology, for the Use of Students. With a General Introduction on the Principles of Palaeontology.
Página 374 - As it does not generally break up before it is raised above the surface of the sea, cautiously and anxiously I sank my bucket to a level with the dredge's mouth, and proceeded in the most gentle manner to introduce Luidia to the purer element. Whether the cold air was too much for him, or the sight of the bucket too terrific, I know not, but in a moment he proceeded to dissolve his corporation, and at every mesh of the dredge his fragments were seen escaping.
Página 184 - Guide to the Study of Insects, and a Treatise on those Injurious and Beneficial to Crops.
Página 21 - In cutting one of the unlucky teeth called denies sapientiae, I experienced an extensive inflammation of the gum, accompanied with great pain, which equally destroyed the power of repose, and of consistent action. On the day when the inflammation was most troublesome, I breathed three large doses of nitrous oxide. The pain always diminished after the first four or five inspirations ; the thrilling came on as usual, and uneasiness was for a few minutes swallowed up in pleasure. As the former state...
Página 90 - Director of the Geological Survey of Ireland, and Professor of Geology in the Royal College of Science, Dublin. MONTAGUE RHO[)ES JAMES, MA, Litt.D., Fellow and Dean of King's College, and Director of the Fitzwilliam Museum, Cambridge. Rev. CHW JOHNS, MA, Queens
Página 298 - Notes of a Course of Nine Lectures on Light, delivered at the Royal Institution. , By John Tyndall, FRS Crown 8vo. is. sewed, or is. 6d. cloth. Notes of a Course of Seven Lectures on Electrical Phenomena and Theories, delivered at the Royal Institution.
Página 95 - ... and I believe a little earth was plastered over the whole, so as to make the surface of the grave smooth and compact.
Página 167 - It would thus appear that the habit is not an instinct, belonging by inheritance to the whole species, but is in each case the result of individual experience. As with the same experience some bees have acquired the habit and others have not, we must admit not only that these insects are intelligent, but that they differ from each other in their degrees of intelligence, some being slow in acquiring knowledge, others quicker.
Página 209 - In all of them epithelium in different stages of deterioration was abundantly present, but very few spores were found in any fresh specimen. On the other hand, after the fluid had been kept for a few hours, myriads of vibriones and many spores were found. In a case of diphtheria, confervoid filaments were noticed, and in two other cases...