The Quarterly Journal of Science, Volume 4John Churchill and Sons, 1867 |
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Page 95
... carbonic acid rapidly . The oxygen of the atmospheric air , however , appears to play no part . Thirdly , leaves decompose carbonic acid in sunshine as readily when this gas is mixed with nitrogen or with hydrogen . Finally ...
... carbonic acid rapidly . The oxygen of the atmospheric air , however , appears to play no part . Thirdly , leaves decompose carbonic acid in sunshine as readily when this gas is mixed with nitrogen or with hydrogen . Finally ...
Page 96
author shows that carbonic oxide is not decomposable by foliage , and considers this as confirming his view , that leaves simultaneously decompose carbonic acid and water CO , + H2O CO , H ,, O , O , being liberated , CO , H , expresses ...
author shows that carbonic oxide is not decomposable by foliage , and considers this as confirming his view , that leaves simultaneously decompose carbonic acid and water CO , + H2O CO , H ,, O , O , being liberated , CO , H , expresses ...
Page 101
... carbonic acid in variable quantity was produced . One noteworthy result of the experiments was the observation that natural valerianic acid obtained from valerian root , behaves under the chromic acid treatment differently from the acid ...
... carbonic acid in variable quantity was produced . One noteworthy result of the experiments was the observation that natural valerianic acid obtained from valerian root , behaves under the chromic acid treatment differently from the acid ...
Page 119
... carbonic acid , to which they had been submitted , that they remained unaltered on a second maceration in strong acid . The contents of the Geological Magazine ' during the past quarter have been so important that our brief notice of ...
... carbonic acid , to which they had been submitted , that they remained unaltered on a second maceration in strong acid . The contents of the Geological Magazine ' during the past quarter have been so important that our brief notice of ...
Page 170
... carbonic acid than is necessary to keep the lime existing in it in solution ; so that when we find a limestone in a very ancient formation , although we may not be able to detect any fossil remains , yet we may reasonably infer that it ...
... carbonic acid than is necessary to keep the lime existing in it in solution ; so that when we find a limestone in a very ancient formation , although we may not be able to detect any fossil remains , yet we may reasonably infer that it ...
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action ammonia amongst amount animals Annelids appears atmosphere attention body British Cader Idris carbonic acid Carboniferous causes chemical cholera coal colliery colour considerable containing copper deposits described districts effect electric Eocene evidence Exhibition existence experiments fact favour feet fossil Geological geologists give glaciers heat hydrogen important inches India interesting iron Journal labour lakes light Liverpool Loch Katrine London Manchester matter means metal meteors miles mineral mines Miocene nature nitrogen North notice observations obtained occur organic original oxidation oxygen paper passed period plants Pliocene portion Pratas Island present probably produced Professor published quantity Railway recently referred remarkable render river rocks Royal Royal Geographical Society sanitary sewage Silurian Sir Charles Lyell Sir John Lubbock Society solution species strata supply surface temperature thallium theory tion town valley whilst
Popular passages
Page 157 - The most insignificant insects and reptiles are of much more consequence, and have much more influence in the economy of Nature, than the incurious are aware of; and are mighty in their effect, from their minuteness, which renders them less an object of attention: and from their numbers and fecundity. Earthworms, though in appearance a small and despicable link in the chain of Nature, yet, if lost, would make a lamentable chasm.
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Page 121 - I tell you, captain, if you look in the maps of the 'orld, I warrant you shall find, in the comparisons between Macedon and Monmouth, that the situations, look you, is both alike. There is a river in Macedon ; and there is also moreover a river at Monmouth...
Page 494 - The Exhibition of 1851 is to give us a true test and a living picture of the point of development at which the whole of mankind has arrived in this great task, and a new starting point from which all nations will be able to direct their further exertions.
Page 283 - ... -0067 in diameter, by its making a powerful electro-magnet, by its decomposing water, and by other tests. The explanation of these effects is as follows : — The electro-magnet always retains a slight residual magnetism, and is therefore in the condition of a weak permanent magnet ; the motion of the armature occasions feeble currents in alternate directions in the coils thereof, which, after being reduced to the same direction, pass into the coil of the electro-magnet in such...
Page 142 - A General Dictionary of Geography, Descriptive, Physical, Statistical, and Historical ; forming a complete Gazetteer of the World. By A. KEITH JOHNSTON, FRSE 8vo. 31s. 6d. M'Culloch's Dictionary, Geographical, Statistical, and Historical, of the various Countries, Places, and principal Natural Objects in the World.
Page 158 - ... worms seem to be the great promoters of vegetation, which would proceed but lamely without them, by boring, perforating, and loosening the soil, and rendering it pervious to rains and the fibres of plants, by drawing straws and stalks of leaves and twigs into it ; and, most of all, by throwing up such infinite numbers of lumps of earth called worm-casts, which, being their excrement, is a fine manure for grain and grass.
Page 15 - ... type in a great many groups of animals of long-continued geological existence. In these groups there is abundant evidence of variation — none of what is ordinarily understood as progression; and, if the known geological record is to be regarded as even any considerable fragment of the whole, it is inconceivable that any theory of a necessarily progressive development can stand, for the numerous orders and families cited afford no trace of such a process.
Page 481 - A crest of topaz is no better in the struggle for existence than a crest of sapphire. A frill ending in spangles of the emerald is no better in the battle of life than a frill ending in the spangles of the ruby.