Philosophical Transactions of the Royal Society of London, Том 138W. Bowyer and J. Nichols for Lockyer Davis, printer to the Royal Society, 1848 |
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Сторінка 141
... valves arranged along the central line of their back , and placed them with the Cirripedes in a peculiar subclass , which he called Articu- lated Mollusca , and considered as intermediate between the two divisions of the animal kingdom ...
... valves arranged along the central line of their back , and placed them with the Cirripedes in a peculiar subclass , which he called Articu- lated Mollusca , and considered as intermediate between the two divisions of the animal kingdom ...
Сторінка 142
... valve . B D The lobes on the margin of the front valve are generally to be seen distinctly developed , but of a smaller size on the front edge of the central portion of the posterior and medial valves ( figs . 1 and 2 , g ) ; and they ...
... valve . B D The lobes on the margin of the front valve are generally to be seen distinctly developed , but of a smaller size on the front edge of the central portion of the posterior and medial valves ( figs . 1 and 2 , g ) ; and they ...
Сторінка 143
... valves , the parts of the cartilaginous mantle not covered by the valves are generally more or less closely covered with calcareous scales or subcylindrical spines , which sometimes are so fine as to assume the form of more or less ...
... valves , the parts of the cartilaginous mantle not covered by the valves are generally more or less closely covered with calcareous scales or subcylindrical spines , which sometimes are so fine as to assume the form of more or less ...
Сторінка 144
... valves of the species whose shells are covered by the mantle bave a plain edge , with only one or two notches . Those of which the shells are partly external have the inner coat of the valve pro- duced beyond the outer coat , thus ...
... valves of the species whose shells are covered by the mantle bave a plain edge , with only one or two notches . Those of which the shells are partly external have the inner coat of the valve pro- duced beyond the outer coat , thus ...
Сторінка 145
... valves , where they are inserted into the mantle , and in the formation of the central cellular coat , which is doubtless formed by small processes of the mantle , like the tubes in the substance of the valves of the coronal Cirripedes ...
... valves , where they are inserted into the mantle , and in the formation of the central cellular coat , which is doubtless formed by small processes of the mantle , like the tubes in the substance of the valves of the coronal Cirripedes ...
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acetate alcohol ammonia analysis aperture baryta baryta salt Belemnite Belemnoteuthis blow-hole boiling bone Bristol Channel Calculated numbers carbonic acid cerotic acid channel Chinese wax chlorine coast colour contained copper corrected cotidal lines crystals dentary dissolved diurnal inequality dried equation erythric erythric acid ether evernesic evernic acid experiments footstalk formula grains heat high water Holyhead Iguanodon inch Increment found inserted Irish Sea leaf lichen light lime liquid London low water lunitidal intervals MDCCCXLVIII mean melting-point memoir nearly needles number of bands observations Observatory obtained ocean orcin orsellesic acid orsellic acid Oxford Clay peristome Philosophical Transactions phragmocone Plate XV portion position posterior potash precipitate prism quantity rays remarkable Royal Medals Royal Society salt gave SCHUNCK side silver soluble solution specimen spectrum stomach stream substance gave sulphate surface teeth temperature tendril tide tion tooth upper urine valves vessel water heights Waterville zinc
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Сторінка 130 - If we compare the mean temperatures of places that differ considerably from each other in latitude, we shall find that the mean values are lower as we proceed north. If we compare the mean temperatures of places having the same latitude, we shall find that the mean value of those situated at the higher level will be less than those at the lower level. If we compare places having the same latitude, we shall find that the mean temperatures of those places situated inland will be higher in the summer...
Сторінка 243 - It has never been resolved into simpler or elementary influences, and may perhaps best be conceived of as an axis of power having contrary forces, exactly equal in amount, in contrary directions.
Сторінка 105 - Channel, as before observed, experiments have shown that, notwithstanding the variety of times of high water throughout the Channel, the turn of the stream...
Сторінка 108 - The portion of the stream which sets into Belfast Lough, splits off Grey Point; one portion flowing up towards Garmoyle, while the other bends back along the shore of Bangor, Groomsport, and Orlock, and blends with the general stream which has come on from the Maidens and Blackhead...
Сторінка 240 - ... the intensity. This expression indicates a uniform intensity, so that there are no bands at all. Secondly, suppose p to increase algebraically in passing from the red to the blue. This will be the case in Sir David Brewster's experiment when the retarding plate is held at the side on which the blue is seen. It will be the case in Professor Powell's experiment when the first arrangement is employed and N is negative, or when the second arrangement is employed and N is positive. In this case w...
Сторінка 189 - Iguanodon would be 1 1 feet 5 inches ; which exceeds that of the Megatherium. If there be any part of the skeleton of the Iguana which may with greater probability than the rest be supposed to have the proportions of the corresponding part of the Iguanodon, it is the lower jaw, by virtue of the analogy of the teeth and the substances they are adapted to prepare for digestion. Now the lower jaw gives the length of the head in the Iguana, and this equals the length of six dorsal vertebrae, so that...
Сторінка 197 - Iguanodon, and the magnitude of the anterior outlets which gave exit to the vessels and nerves that supplied the front of the mouth, indicate the great development of the integuments and soft parts with which the lower jaw was invested. The sharp ridge bordering the deep groove of the symphysis, in which there are also several foramina, evidently gave attachment to the muscles and integuments of the under lip ; while two deep pits for the insertion of the protractor muscles of the tongue, manifest...
Сторінка iii - Angularity of the subjects, or the advantageous manner of treating them, without pretending to answer, or to make the Society answerable, for the certainty of the facts, or propriety of the reasonings, contained in the several Papers so published, - which must still rest on the credit or judgment of their respective Authors.