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If the rocks and earth in the cylindrical cavities of light which Clewe had already produced in his experiments had actually been removed with pickaxes and shovels, the lighted hole a few feet in depth could not have appeared more real, the bottom and sides of the little well could not have been revealed more sharply and distinctly; and yet there was no hole in the ground, and if one should try to put his foot into the lighted perforation he would find it as solid as any other part of the earth.
The symptoms of this condition are fighting for breath, giddiness, relaxation of the sphincters, and convulsions. Post mortem, cadaveric lividity is well marked, especially in nose, lips, ears, etc.; the right cavities of the heart and the venæ cavæ are found gorged with dark fluid blood.
See in Aus des Natur, xx., pp. 250-254, 263-266, two interesting articles founded on the researches of Schmidt. The cases are certainly not numerous where marine currents are known to pour continuously into cavities beneath the surface of the earth, but there is at least one well-authenticated instance of this sort that of the mill-stream at Argostoli in the island of Cephalonia.
We should be quite unable to explain these if comparative anatomy and ontogeny did not come to our assistance. The vascular system in man and all the Craniotes is an elaborate apparatus of cavities filled with juices or cell-containing fluids. With the latter are connected the large cavities of the body, especially the body-cavity, or coeloma.
Honey is procured by steeping the cones of the Banksia or other melliferous flowers in water. It is procured pure from the hives of the native bees, found in cavities of rocks, and the hollow branches of trees. The method of discovering the hive is ingenious.
"We have to get in, I think," said a nice little old lady in a bonnet to Ann Veronica, speaking with a voice that quavered a little. "My dear, can you see in this light? I think I would like to get in. Which is C?" Ann Veronica, with a curious sinking of the heart, regarded the black cavities of the vans. Their doors stood open, and placards with big letters indicated the section assigned to each.
And, dropping upon her hands and knees, she proceeded to crawl into one of the cavities that I had been searching, and which I should have declared was not nearly capacious enough to receive a full-grown man. Nevertheless Lotta completely disappeared within it, and I after her.
The water in the cavities and interstices of those bodies composing strata, must be in a stagnating state; consequently, it can only act upon the surfaces of those cavities which are to be filled up. But with what are they to be filled?
They have ripened and fallen; but the white Spanish moss, festooned along the branches, hangs weeping down like the drapery of a deathbed. Prostrate trunks, yards in diameter and half-decayed, lie along the ground. Their ends exhibit vast cavities where the porcupine and opossum have taken shelter from the cold.
Plainly all the rest of the vocal mechanism exists for them, and too much stress cannot be laid on this fact. However excellent the state of training of the part below them this is of no avail except in so far as it can affect these resonance cavities. How is this instrument played upon and how are these cavities made actually into resounding chambers?
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