Proceedings, American Philosophical Society (vol. 45, 1906)American Philosophical Society |
Загальні терміни та фрази
abundant actinolite albite Alps Amer analyses average basic Calaveras Valley California carinthine cause cent chain chemical Coast Ranges composition concepts crossite crystals cubic centimeters deep depth developed diabases diorite earth earth's crust earthquakes eclogites elevation epidote eruption explain explosive face fact feet feldspars fluid forces formation Franklin garnet geological glauco glaucophane schist globe gneiss gram H₂O heat hornblende igneous rocks injection islands K₂O land lava lawsonite layer lithosphere litter logical mass Measured Calculated metamorphism mica miles mineral minutes mountains movement nature observed occur ocean original paragonite parallel pargasite phane phenomena plagioclase plants Poland China present pressure principles probably Prof pyritohedron pyroxenes quantity quartz recrystallized regions remarkable sea bottom sea waves sediments seems shore shrinkage silica solution steam subsidence Suess sulphuric acid surface Survey temperature theory tion titanite trisoctahedron trough U. S. Geol upheaved vapor volcanoes zoisite ΙΟ
Популярні уривки
Сторінка 64 - This is certain, things however absolute and entire they seem in themselves, are but retainers to other parts of nature, for that which they are most taken notice of by us.
Сторінка 111 - The electric fluid is attracted by points. We do not know whether this property is in lightning. But since they agree in all the particulars wherein we can already compare them, is it not probable they agree likewise in this ? Let the experiment be made.
Сторінка 53 - It is said that the birth rate is steadily falling, that the average stature of men is lower by two inches at least than it was a century ago, that the physical force is less among the peasants at their homes. Legoyt tells us that " it will take long periods of peace and plenty before France can recover the tall statures mowed down in the wars of the republic and the first empire.
Сторінка 115 - ... the vast quantity of smoke, long continuing to issue during the summer from Hecla, in Iceland, and that other volcano which arose out of the sea near that island, which smoke might be spread by various winds over the northern part of the world, is yet uncertain. It seems however worth the inquiry, whether other hard winters, recorded in history, were preceded by similar permanent and widely extended summer fogs. Because, if found to be so, men might from such fogs conjecture the probability of...
Сторінка 323 - Meteorics" are certainly very remarkable. In the first sentence he says, " the distribution of land and sea in particular regions does not endure throughout all time, but it becomes sea in those parts where it was land, and again it becomes land where it was sea, and there is reason for thinking that these changes take place according to a certain system, and within a certain period.
Сторінка 53 - I set the cost of armadas and the sacrifice of soldiers and friars sent to the Philippines. And this I count the chief loss. For mines give silver and forests give timber, but only Spain gives Spaniards, and she may give so many that she may be left desolate and constrained to bring up strangers
Сторінка 115 - Hence the surface was early frozen. Hence the first snows remained on it unmelted, and received continual additions. Hence perhaps the winter of 1783-4, was more severe than any that had happened for many years. The cause of this universal fog is not yet ascertained. Whether it was adventitious to this earth, and merely a smoke proceeding from the consumption by fire of some of those great burning balls or globes which we happen to meet with...
Сторінка 324 - ... again, they occasion the sea to be let down. And it is not merely the small, but the large islands also, and not merely the islands, but the continents which can be lifted up together with the sea ; and both large and small tracts may subside, for habitations and cities, like Bure, Bizona, and many others, have been engulphed by earthquakes.
Сторінка 316 - In fact the density of the crust beneath the mountains must be less than that below the plains, and still less than that below the ocean-bed.
Сторінка 18 - The volume of the ocean is put at 302,000,0001 cubic miles, and I have given it a density of 1.03, which is a trifle too high. The mass of the atmosphere, so far as it can be determined, is equivalent to that of 1,268,000 cubic miles of water, the unit of density. Combining these data, we get the following expression for the composition of the known matter of our globe.