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Updated: July 22, 2025
He suggests that the Ventriculites of the chalk were nearly allied to these sponges, and that when the silica of their spicules was removed, and was dissolved out of the calcareous matrix, it set into flint. The occurrence here and there, in the white chalk of the south of England, of isolated pebbles of quartz and green schist has justly excited much wonder.
Instead, he bound the Arab to fresh devotion by touching lips and forehead, and by handing him the little volume. The Master's arm had to push its way against the wind as against a solid thing; and the billion rushing spicules of sand that swooped in upon him from the desert emptiness, stung his flesh like tiny scourges.
Urine was afterward voided through the left pubic opening, and spicules of bone were discharged for two years afterward; ultimate recovery ensued. Barkesdale relates the history of the case of a Confederate soldier who was shot at Fredericksburg in the median line of the body, 1 1/2 inches above the symphysis, the wound of exit being in the median line at the back, 1/2 inch lower down.
These fibers are so close together as to draw up water by capillary action, and, indeed, a great deal in the value of a sponge depends upon the fineness and tenuity of these fibers. Dr. Ledenfeld again illustrated this stage of his lecture by means of a number of microscopic slides in which the variety of shape and size of these spicules and "spongin" fibers were shown.
Sphaerotheca spores. 115. Spirogyra. 116. Spicules of sponge. 117. Starch. 118. Staurastrum furcigerum. 119. " gracile. 120. Staurogenum quadratum. 121. Surirella. 122. Synchoeta. 123. Synhedra. 124. Tabellaria. 125. Tetraspore. 126. Trachelomonas. 127. Trichodiscus. 128. Uvella. 129. Volvox globator. 130. " sull. 131. Vorticel. 132. Worm fluke. 133. Worm, two tailed. 134. Yeast.
Ferruginous dust, presumably of such origin, has been found on the polar snows, as well as on the snows of mountain-tops, but whether it could produce the phenomena of auroras is at least an open question. Other theorists have explained the aurora as due to the accumulation of electricity on clouds or on spicules of ice in the upper air.
Even here, with cloud masses still piling high overhead, the eager observer, bent on further quests, was for pursuing the voyage; but Mr. Coxwell interposed with an emphatic, "Too short of sand!" and the downward journey had to be commenced. Presently, too, a new wonder for a midsummer afternoon a snow scene all around, and spicules of ice settling and remaining frozen on the coatsleeve.
More fossils were discovered on February 1, and a quantity of lichens, shells, worm casts, and sponge spicules were discovered in the locality of Evans Coves, to which the party returned. On February 17 they began to look for the "Terra Nova," but as time went on and she did not put in an appearance Campbell prepared to winter.
When the embryo has become partly developed, it detaches itself from the parent sponge, and, issuing from the oscula, propels itself through the water by means of a number of flagella. Silicious spicules next appear in its structure, and it then attaches itself to a rock and assumes its mature form.
With a malicious smile, the fat, one-eyed Moolah advanced with his fist closed, and the four little brown spicules protruding from between his fingers. It was to Belmont that he held them first. The Irishman gave an involuntary groan, and his wife gasped behind him, for the splinter came away in his hand. Then it was the Frenchman's turn, and his was half an inch longer than Belmont's.
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