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Updated: June 11, 2025
The perforations of the earthworms and of many insect larvae mechanically affect the texture of the soil and its permeability by water, and they therefore have a certain influence on the form and character of terrestrial surface. The earthworms long ago made good their title to the respect and gratitude of the farmer as well as of the angler.
This system was exploited through the use of a moderately paid clerical force. In practice, there was employed such a number of perforating machines as the exigencies of business demanded. Each machine was operated by a clerk, who translated the message into telegraphic characters and prepared the transmitting tape by punching the necessary perforations therein.
Inasmuch as a succession of such impulses coming over the line owed their origin to the perforations in the transmitting tape, it followed that the resulting marks upon the receiving tape would correspond thereto in their respective lengths. Hence, the transmitted message was received on the tape in visible dots and dashes representing characters of the Morse alphabet.
The top of the tube, i, is provided with four small projections, upon which rests a copper cone, o, soldered to the tube at a point below the perforations in the base of the thimble. The cone is perforated at its lower end with small holes, p, the sum of whose areas is at least equal to the area of the tube.
The gauge of a perforation is determined by the number of holes in this distance. Scales have been prepared for measuring perforations but it would be superfluous to attempt to describe them here. One of the largest perforations that has been used for stamps has seven holes in two centimetres. This was used on the stamps of France by Susse Freres, a firm of stationers.
Broca suggests that the trephining was done by scratching or scraping, but, as Lucas-Championniere holds, it was also done by a series of perforations made in a circle with flint instruments, and a round piece of skull in this way removed; traces of these drill-holes have been found.
The little pools or perforations breaking the surface of the broad platform, acres of rocks, are, I believe, unexplained phenomena. In the driest season these openings contain water, presumably forced upwards from hidden springs. The pools, just now covered with green slime, curiously spot the grey surface of the rocks.
Whir-r-r, whir-r-r; there has been clatter enough here in time past, I warrant you. Hist! It is not done yet!" Stepping lightly to one of the little perforations which had once served as windows to the tower, he cautiously thrust his head through the opening; and, after gazing there half a minute, he withdrew it again, making a gesture to the attentive Wilder to be silent.
The sun was gone, night fell on the temple and suddenly there was a swaying movement of the apse above the statue; the stars were shaken by invisible hands, and colored flames twinkled with dazzling brightness from a myriad five-rayed perforations. Once more the god was revealed to his worshippers under a flood of magical glory, and now fully visible in his unique beauty.
Nearly all the peas invaded show us the multiple perforations already observed on the dry peas abandoned by the weevils. Does this actually mean that there are several grubs in the pea? Yes. Skin the peas in question, separate the cotyledons, and break them up as may be necessary.
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