The Annals and Magazine of Natural History: Zoology, Botany, and Geology

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Taylor & Francis, Limited, 1881
 

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260 ÆäÀÌÁö - We appear, therefore, to be no nearer the beginning of things in the Devonian epoch than in the Carboniferous, so far as either greater unity or simplicity of structure is concerned...
197 ÆäÀÌÁö - ooze.' 2. That the deep-sea sponges, with their environment of protoplasmic matter, constitute by far the most important and essential factors in the production and stratification of the flints. 3. That whereas nearly the whole of the carbonate of lime, derived partly from Foraminifera and other organisms that have lived and died at the bottom, and partly from such as have subsided to the bottom only after death, goes to build up the calcareous stratum ; nearly the whole of the silica, whether derived...
260 ÆäÀÌÁö - Finally, while there are some forms which, to some degree, bear out expectations based on the general derivative hypothesis of structural development, there are quite as many which are altogether unexpected, and cannot be explained by that theory without involving suppositions for which no facts can at present be adduced.
197 ÆäÀÌÁö - That the stratification of the flint is the immediate result of all sessile Protozoan life being confined to the superficial layer of the muddy deposits. 7. That the substance which received the name of " Bathybius," and was declared to be an independent living Moneron, is, in reality, sponge-protoplasm.
465 ÆäÀÌÁö - if these things be done in the green tree, what shall be done in the dry ?" Excuse me for employing a sentence of Scripture on this occasion ; I apply it very seriously.
258 ÆäÀÌÁö - The last statement is simply inferred from the fact that all the modern types most nearly allied to them are now aquatic.
258 ÆäÀÌÁö - If, too, the concentric ridges, formerly interpreted by me as possibly representing a stridulating organ, should eventually be proved an actual part of the wing, we should have here a structure which has never since been repeated even in any modified form.
352 ÆäÀÌÁö - Cap," a bank situated some distance northeast from the Grand Banks. The cause of so great a mortality among these great Cephalopods can only be conjectured. It may have been due to some disease epidemic among them, or to an unusual prevalence of deadly parasites or other enemies. It Is worth while, however, to recall the fact that these were observed at about the same time, in autumn, when most of the specimens have been found cast ashore in Newfoundland in different years.
188 ÆäÀÌÁö - Just before gelatinizing, silicic acid flows like an oil. "A dominating quality of colloids is the tendency of their particles to adhere, aggregate, and contract. This idio-attraction is obvious in the gradual thickening of the liquid, and when it advances leads to pectization. In the jelly itself, the specific contraction in question, or...
461 ÆäÀÌÁö - By Prof. Owen, CB, F.lt.S., FGS The new form of Theriodont reptile described by the author in this paper under the name of dSlurosaurus felinus is represented by a skull with the lower jaw, obtained by Mr. Thomas Bain from the Trias of Gough, in the Karoo district of South Africa. The postorbital part is broken away. The animal is mononarial ; the alveolar border of the upper jaw is slightly sinuous, concave above the incisors, convex above the canines and molars, and then straight to beneath the...

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