The Canadian Record of Science, Volume 8

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Natural History Society., 1902 - Natural history

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Page 140 - The only access from the town was by a circuitous and ungraded cart track, almost impassable at night. The buildings had been abandoned by the new board, and the classes of the Faculty of Arts were held in the upper story of a brick building in the town, the lower part of which was occupied by the High School. I had been promised a residence, and this, I found, was to be a portion of one of the detached buildings aforesaid, the present east wing. It had been very imperfectly finished...
Page 430 - ... structure is not developed, and the whole movement is due to changes in the shape of the component calcite crystals, by twinning and gliding. (5) This latter movement is identical with that produced in metals by squeezing or hammering, a movement which in metals as a general rule, as in marble, is facilitated by increase of temperature. (6) There is therefore a flow of marble just as there is a flow of metals under suitable conditions of pressure.
Page 112 - Had it crystallized out of a more basic magma, which, however, was still molten when one acid more was injected and the mixture became such as to form eclogite? But I content myself with indicating a difficulty and suggesting a possibility ; the fact itself is indisputable that the diamond occurs, though rather sporadically, as a constituent of an eclogite, which rock, according to the ordinary rules of inference, would be regarded as its birthplace.
Page 429 - The following is a summary of the results arrived at : — 1. By submitting limestone or marble to differential pressures exceeding the elastic limit of the rock and under the conditions described in this paper, permanent deformation can be produced. 2. This deformation, when carried out at ordinary temperatures, is due in part to a cataclastic structure and in part to twinning and gliding movements in the individual crystals comprising the rock. 3. Both of these structures are seen in contorted...
Page 111 - blue ground " is not the birthplace either of it or of the garnets, pyroxenes, olivine, and other minerals, more or less fragmental, which it incorporates. The diamond is a constituent of the eclogite, just as much as a zircon may be a constituent of a granite or a syenite. Its regular form suggests not only that it was the first mineral to crystallise in the magma, but also a further possibility.
Page 413 - ... touched upon at a few points only, and in the vicinity of which a space of over 300 miles in longitude had remained even geographically unknown. The report discussed not merely the physical and general geology of the region, and the more detailed characteristics of the various geological formations, but also the capabilities of the country with reference to settlement. The whole edition was long ago distributed, and the volume is now exceedingly scarce and difficult to obtain.
Page 333 - ... with familiar plant forms and phenomena. It should be related to the experiences of the daily life. It should not be taught for the purpose of making the pupil a specialist : that effort should be retained for the few who develop a taste for special knowledge. It is often said that the high school pupil should begin the study of botany with the lowest and simplest forms of life. This is wrong. The microscope is not an introduction to nature. It is said that the physiology of plants can be best...
Page 244 - Report on the geology of the area covered by the Seine River and Lake Shebandowan map sheets, comprising portions of Rainy River and Thunder Bay districts, Ontario.
Page 100 - ... inch. All seem to be embedded in the green part of the rock. As the outer part of the boulder looks rather more decomposed than the inner, I had a piece removed from one end, thus enabling me to study the mass to a depth of more than an inch from the surface, and examined a strip, about 4 inches long, in a series of five slices. The late Professor Lewis has given, in the volume already mentioned, so full an account of the minerals which occur in the
Page 102 - I regard them as alteration products of a ferriferous olivine. This diopside, at the exterior and along cracks, is often converted into a minutely granular to fibrous mineral, which gives a " dusty " aspect to that part of the crystal, when viewed with transmitted light, and a whitish-green one with reflected light. This often terminates in a minutely acicular fringe, piercing the original diopside. Its grains occasionally are a little larger, showing a cleavage, dull green in colour, fairly pleochroic,...

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