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Updated: June 22, 2025
There is no such thing as solid substance, matter is permeable to these forces, and, therefore, it is easy to see how a terrapin can come quick as lightning through a wall." Mr. Copeland is now called upon to give the audience some tests, a rather inoffensive looking young man with hair standing up.
Improvements in our methods will, I think, undoubtedly lead to a favorable use of the method in these instances. Beans, peas, wooden toys, and similar foreign bodies, being easily permeable to the rays, will not probably be discovered.
De Vries imagined that the contractions noticed in the protoplasm of cells placed in saline solutions were due to a phenomenon of osmosis, and, upon examining more closely certain peculiarities of cell life, various scholars have demonstrated that living cells are enclosed in membranes permeable to certain substances and entirely impermeable to others.
Whenever a tenacious water-holding stratum rests on a loose, gravelly bed so situated as to admit of a free discharge of water from or through it by means of the outcropping of the bed at a lower level, or of deep-lying conduits leading to distant points of discharge, superficial waters may be carried off by opening a passage for them through the impervious into the permeable stratum.
In this respect it resembles air as much as cloud the blueness of the sky is the sunlit air seen through the lower and inner strata of itself. In the same way, the whiteness of the comet is sunlit vapour seen through portions of itself. The sunbeams pass as readily through the entire thickness of the cometic substance as they do through our own highly permeable atmosphere.
The chief ingredient in this particular house-wall is the common brick, burnt earth, and but one step from the handfuls of clay of the ancestral mud hut, small in size and permeable to damp. Slowly, day by day, the walls grew tediously up, to a melody of tinkling trowels.
If it were as free to drain away as are surface streams, it would sink soon after a rain to the level of the deepest valleys of the region. WELLS AND SPRINGS. Excavations made in permeable rocks below the ground-water surface fill to its level and are known as wells.
Yet, Galen, who dissected the hearts of a vast number of the lower animals according to his own account, maintained that this septum was permeable, and that the air, entering one side of the heart from the lungs, passed through it into the opposite side and was then transferred to the arteries.
But as the individual is played upon by the objects of the environment, the valves open to the passage of the nervous current. With increased use they become more and more permeable, and thus learning is the process of making easier the passage of the nervous current from one neurone to another.
Others, who do reluctantly advance, see what a figure they make; man after man edging away as he can, so that the regiment "stands forty to eighty men deep, with lanes through it every two or three yards;" permeable everywhere to Cavalry, if we had them; and turning nothing to the Enemy but color-sergeants and bare poles of a regiment! And Romer is dead, and Goldlein of the Infantry is dead.
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