The Edinburgh New Philosophical JournalA. and C. Black, 1864 |
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Results 1-5 of 91
Page 4
... appears to me that this can be explained by a few simple principles- 1st , The tendency of all species to diffuse themselves over a wide area , some one or more in each group being actually found to have so spread , and to have become ...
... appears to me that this can be explained by a few simple principles- 1st , The tendency of all species to diffuse themselves over a wide area , some one or more in each group being actually found to have so spread , and to have become ...
Page 5
... appear that the tropical character of the snakes is quite ex- ceptional , depending upon the fact of the whole group being pre - eminently tropical , and can therefore not be held to throw any doubt on the position of Japan in the ...
... appear that the tropical character of the snakes is quite ex- ceptional , depending upon the fact of the whole group being pre - eminently tropical , and can therefore not be held to throw any doubt on the position of Japan in the ...
Page 10
... appear again in Chili , the real amount of affinity to northern regions may be taken as somewhat larger . Here , then , as only 10 genera out of 77 are common to south temperate and tropical America , and as the remainder have wide ...
... appear again in Chili , the real amount of affinity to northern regions may be taken as somewhat larger . Here , then , as only 10 genera out of 77 are common to south temperate and tropical America , and as the remainder have wide ...
Page 12
... appear in such numbers as to indicate an actual continuity of land , which would have been almost indispensable for the passage of mammalia , and would at the same time have undoubtedly admitted Australian forms of land birds , which do ...
... appear in such numbers as to indicate an actual continuity of land , which would have been almost indispensable for the passage of mammalia , and would at the same time have undoubtedly admitted Australian forms of land birds , which do ...
Page 13
... appear to have changed at least as quickly as mammals , and insects , in some cases , perhaps more so ; owing , no ... appears evident that no regions ( be they few or many in number ) can be marked out , which will accurately represent ...
... appear to have changed at least as quickly as mammals , and insects , in some cases , perhaps more so ; owing , no ... appears evident that no regions ( be they few or many in number ) can be marked out , which will accurately represent ...
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acid alkali ammonia animals appear atmosphere Bell Belleville Ben Lawers bipinnate Birds blood body Botanic carbonic carbonic acid carpels cephalization climate coal common Crustaceans cultivation cupule Decapods degradational distinct earth evidence facts feet female florets ferns fertile Fishes Flora flowers forms frond Gaspé genera geological geologists grade Gray groups heat hemitypic higher hybrids Ibis inches inferior insects islands L'Abbé Provancher Lake lanceolate latitudes latter life-system lobes lupuline Macoun male Mammals Megasthenes method Microsthenes millimetre minutes motion muriate Myriapods nature nerve normal northern observed obtained occur Oötocoids organs oviparous P. W. Maclagan period pinnæ pinnate pinnatifid pinnules plants pollen pollinia portion posterior produced Professor quantity quicklime Radiates regions remarkable Reptiles Reptilian River Selachians sepals SERIES.-VOL solutions sori species specimens stamens strong contractions structure superposed suppose surface temperature tion typical vegetable velocity Vertebrates woods
Popular passages
Page 148 - ... but the heavens and the earth, which are now, by the same word are kept in store, reserved unto fire against the day of judgment and perdition of ungodly men.
Page 52 - No human bones were obtained anywhere during these excavations, but many flint knives, chiefly from the lowest part of the bone-earth ; and one of the most perfect lay at the depth of thirteen feet from the surface, and was covered with bone-earth of that thickness.
Page 148 - As all the living forms of life are the lineal descendants of those which lived long before the Silurian epoch, we may feel certain that the ordinary succession by generation has never once been broken, and that no cataclysm has desolated the whole world. Hence we may look with some confidence to a secure future of equally inappreciable length. And as natural selection works solely by and for the good of each being, all corporeal and mental endowments will tend to progress towards perfection.
Page 301 - ... known to the last generation by his book on the history of Edinburgh and his collection of Scotch criminal trials — and perhaps still better by the extraordinary attenuated, almost skeleton, figure of the old gentleman preserved to us in Kay's Portraits. Dr Peter Reid (whose mother was a Boswell of the Balmuto family) was the editor of Dr Cullen's " First Lines of the Practice of Physic,
Page 50 - Andornach for example) ; and yet some of them may be of sufficiently modern date to belong to the era when man was contemporary with the mammoth and rhinoceros in the basin of the Meuse. ' But although we may be unable to estimate the minimum of time required for the changes in physical geography above alluded to, we cannot fail to perceive that the duration of the period must have been very protracted, and that other ages of comparative inaction may have followed, separating the post-pliocene from...
Page 49 - Postpliocene times, and may perhaps have been connected and coeval with repeated risings or sinkings of the land in the basin of the Meuse.
Page 49 - Liege, there are two classes of evidence to which we may appeal for our guidance. First, considerations of the time required to allow of many species of carnivorous and herbivorous animals, which flourished in the cave period, becoming first scarce, and then so entirely extinct as we have seen that they had become before the era of the Danish peat and Swiss lake dwellings : secondly, the great number of centuries necessary for the conversion of the physical geography of the Liege district from its...
Page 30 - If any part of a nerve is submitted to the action of a permanent current, the nerve, in its whole extent, suddenly undergoes a material change in its internal constitution which disappears on breaking the circuit as suddenly as it came on. This change, which is called the electrotonic state, is evidenced by a new electro-motive power, which every point of the whole length of the nerve acquires during the passage of the current, so as to produce, in addition to the usual current, a current in the...
Page 9 - Islands, which accords in its distribution with the other classes of animals, but which has been overwhelmed, and in some cases perhaps exterminated, by immigrants from the adjacent countries. The result is a mixture of races, in which the foreign element is in excess ; but naturalists need not be bound by the same rule as politicians, and may be permitted to recognise the just claims of the more ancient inhabitants, and to raise up fallen nationalities. The aborigines, and not the invaders, must...
Page 120 - The sum of the momenta of the parts of the system in any direction is equal to the momentum in the same direction of a mass equal to the sum of the masses moving with a velocity equal to the velocity of the centre of inertia.