But whilst rejecting the "elevatory theory," it is necessary to bear in mind that volcanic cones and dome-shaped elevations have been formed in several distinct ways, giving rise to varieties of structure essentially different.
The upper subsoils of Scotland bear frequent mark of the elevatory period which succeeded this period of depression.
They could be shown in one view if they were shaded by lines and a piece shown broken out where the collars and, recesses are, but line shading is too tedious for detail drawings, beside involving too much labor in their production.
Figure 243 represents a drawing of one-half of a bevil gear, and an edge view projected from the same.
Then, from circle H, we may, by dividing it, obtain the angle of A to B or of B to A.
The lines are made finer by closing the pen points by means of the screw provided for that purpose.
A similar line, from i to W, will give the height of the tooth at its inner end.
These lines will often serve to indicate the shape of some part of the piece represented, as will be seen from the following examples.
Thus Professor Unwin has proposed the system shown in the Figures 95 and 96.
Now it is clear that the width of the end face of the cylinder will appear the same from any point of view it may be looked at, hence the sides H H are made to equal the diameter of the cylinder B and marked up to centre line E.
It is sometimes necessary to reduce a drawing to a smaller scale, or to find a minute fraction of a given dimension, such fraction not being marked on the lineal measuring rules at hand.
High land is not produced simply by uniform upheaval, but by a predominance of elevatory over subsiding movements.
Occasionally some of the calamite brakes and forests of Sigillariae and Coniferae were exposed in the flood season, or sometimes, perhaps, by slight elevatory movements to the denuding action of the river or the sea.
This elevatory force was not all expended on a single central point as Von Buch has imagined in the case of Palma, Teneriffe, or Somma, but rather followed for a short distance a linear direction.
Hence in these cases it would appear, that volcanos burst forth into action and become extinguished on the same spots, accordingly as elevatory or subsiding movements prevail there.
It would appear also, that the elevatory and subsiding movements follow nearly the same laws.
A continuance in future of the elevatory movement, in the region of the Andes and of Chiloe, might cause the former chain to rival the Alps in altitude, and give to Chiloe a height equal to that of the Jura.
The southern coast of Arabia seems to have been subjected to the sameelevatory movement, for Dr.
It is necessary to bear these remarks in mind, in considering the evidence of the elevatory movements in the Pacific and Indian Oceans, as it does not often rest on specific determinations, and therefore should be received with caution.
Sudden fractures of rock, resulting from the steady and slow increase of elevatory pressure.
The connection between the elevatory and eruptive forces.
Hence in these cases it would appear that volcanos burst forth into action and become extinguished on the same spots, accordingly as elevatory or subsiding movements prevail there.
Patagonia there have certainly been many and long pauses in the upward action of the elevatory forces.
It would appear also that the elevatory and subsiding movements follow nearly the same laws.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "elevatory" in a variety of sentences. We hope that you will now be able to make sentences using this word.
