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Even during the coldest weather evaporation never wholly ceases, and the sunshine that abounds between the storms is sufficiently powerful to melt the surface more or less through all the winter months.
Our conclusions must therefore be drawn from observations on small plants, or separate branches of trees, and of course are subject to much uncertainty. Taking this estimate, the evaporation from the forest would be equal to a precipitation of two hundred and forty inches, or very nearly one hundred and fifty standard gallons to the square foot of surface.
During this season the breeze entirely ceases; and, according to good thermometrical observations made by M. Pozo, the thermometer rises in the shade to 39 and 39.5 degrees, though kept at the distance of more than fifteen feet from the ground. As we approached the banks of the Portuguesa, the Apure, and the Apurito, the air became cooler from the evaporation of so considerable a mass of water.
The sorghum or dura is sown thickly, and when about a foot high if the owner has been able to prepare the soil elsewhere it is transplanted, a portion of the leaves being cut off to prevent too great evaporation and the death of the plant. 17th January, 1868. The Wanyamwesi and people of Garaganza say that we have thirteen days' march from this to the Tanganyika Lake.
This silly story is now refuted; and Guapo not only assured his companions that there was no danger, but even tasted the curare from time to time while in the pan, in order to judge when it was sufficiently concentrated. This he could tell by its taste, as it grew more and more bitter as the evaporation proceeded.
Some cases showed higher temperature when this was more marked, but this was not sufficiently constant to justify any conclusions being drawn. Heat loss occurs preponderantly as a result of radiation from the skin and by sweating with consequent evaporation of the secretion. These processes are functions of the skin and surface circulation. Are they disturbed in our stupors?
In the present sea, as is well known, there are different levels at different places, owing to the operation of peculiar local causes, as currents, evaporation, and the influx of large rivers into narrow-mouthed estuaries. The differences of level in the ancient beaches might be occasioned by some such causes.
The expense of such a preparation would not be considerable, as, by subsequent evaporation, the salt might be used over and over again for the same purpose. Q. Will you explain the process of casting cylinders?
The temporary evaporation of the consciousness of one's own Personality is then decidedly not a pathological experience. It seems the condition, indeed, and recognized as such in popular judgment, of the deepest feeling and the highest achievement. Perhaps it is the very assumption of this condition in our daily thoughts that has veiled the psychological problem it presents.
Hence, if there were no dust in the air, escaping steam would remain invisible; there would be no cloud in the sky; and the vapour in the atmosphere, constantly accumulating through evaporation from seas and oceans and from the earth's surface, would have to find some other means of returning to its source.
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