The Canadian Record of Science, المجلد 7Natural History Society., 1897 |
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طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
abundant acetylene ambulacral anorthosite appears Assa B.C. John Macoun beds beetles birds Caledonian Mountain Cambrian Canada Canadian carbide carbon Carboniferous cent coast collected copper Cryptozoon crystalline curve Dawson deposits Devonian district E. T. Chambers earth east Eozoon Exploits River figs folds formation fossils Fundamental Gneiss Geological Survey gneiss granite Grenville series Hastings series Herb hornblende horsts Huronian igneous inches insects interesting J. A. U. Beaudry J. B. Williams John Macoun John's Kootanie Lake Lake Memphremagog Laurentian Lawrence limestone Lower masses matte miles mineral Montreal Museum Nicholson nickel Nova Scotia observed occur Ontario origin orthoclase Ottawa Plants plates portion present probably Prof quartz Quebec RECORD OF SCIENCE recorded west Redpath Museum region rocks Rocky Mountains schists Silurian Society species specimens spruce stomachs strata Stromatopora structure surface Vancouver Island veins western Whitbourne
مقاطع مشهورة
الصفحة 263 - geology, in the magnitude and sublimity of the objects of which it treats, undoubtedly ranks, in the scale of the sciences, next to astronomy...
الصفحة 519 - Catbirds were examined, and found to contain 44 per cent of animal (insect), and 56 per cent of vegetable food. Ants, beetles, caterpillars, and grasshoppers constitute three-fourths of the animal food, the remainder being made up of bugs, miscellaneous insects, and spiders. One-third of the vegetable food consists of cultivated fruits, or those which may "be cultivated...
الصفحة 263 - In examining things present, we have data from which to reason with regard to what has been; and, from what has actually been, we have data for concluding with regard to that which is to happen hereafter.
الصفحة 525 - ... diet. All these are more or less harmful, except a few predaceous beetles, which amount to 8 per cent; but, in view of the large consumption of grasshoppers and caterpillars, we can at least condone this offense, if such it may be called. The destruction of grasshoppers is very noticeable in the months of August and September, when these insects form more than 60 per cent of the diet.
الصفحة 418 - ... if not indeed being driven to protect themselves from the beasts around them, and evolving the more complicated forms of tools or weapons from the simpler flakes which had previously served them as knives? May we not imagine that when once the stage of civilization denoted by these palaeolithic implements had been reached the game for the hunter became scarcer, and that his life in consequence assumed a more nomad character? Then, and possibly not till then, may a series of migrations to " fresh...
الصفحة 440 - Lands on the west of the same bay, by O'Sullivan beyond the sources of the Ottawa, and by Low in Labrador. But it is not so long since that Dr. Dawson. in reviewing what remains to be done in the Dominion in the way of even pioneer exploration, pointed out that something like a million square miles still remained to be mapped. Apart from the uninhabitable regions in the north, there are, as Dr.
الصفحة 410 - In like manner, we of the living generation, when called upon to make grants of thousands of centuries in order to explain the events of what is called the modern period, shrink naturally at first from making what seems so lavish an expenditure of past time. Throughout our early education we have been accustomed to such strict economy in all that relates to the chronology of the earth and its inhabitants in remote ages, so fettered have we been by old traditional beliefs, that even when our reason...
الصفحة 436 - ... fully mapped during the last half century that what is required now is mainly the filling-in of the details. This is a process that requires many hands and special qualifications. All over the continent there are regions which will repay special investigation. Quite recently an English traveller, Mr.
الصفحة 520 - A few predaceous beetles were eaten, but, on the whole, its work as an insect destroyer may be considered beneficial. " Eight per cent of the food is made up of fruits like raspberries and currants which are or may be cultivated, but the raspberries at least are as likely to belong to wild as to cultivated varieties. Grain, made up mostly of scattered kernels of oats and corn, is merely a trifle, amounting to only 3 per cent ; and, though some of the corn may be taken from newly planted fields, it...
الصفحة 409 - ... the monuments of these ages, all referable to the era of existing species. In order to abridge the number of centuries which would otherwise be indispensable, a disposition is shown by many to magnify the rate of change in prehistoric times...