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Updated: May 8, 2025
The jelly-fishes of another section are furnished with one or more air-bags, which assist them in swimming, and hence bear the name of hydrostatic acalephæ. From the top of it rises a purple crest, which acts as a sail, and by its aid the little voyager scuds gaily before the wind.
He longed to do something nasty, and he succeeded admirably. As we have already remarked, water seeks its own level. It ran down the speaking-tube until it encountered the cotton waste plug; whereupon, due to the hydrostatic pressure, the plug gave way and was forced down to the tightly closed mouth of the tube, and the suds backed up behind it.
These were not quite so satisfactory, as the recoil developed was larger, in proportion to their size, than Tom had figured. "But I can easily put a larger hydrostatic check on them," he said. "Now, we'll fire by batteries, and see what the total is."
Do they prove a submarine communication between the limestone of the coast with the limestone serving as the basis of lithophyte polypi, and is the fresh water of Cuba raised up by hydrostatic pressure across the coral rocks of Cayos, as it is in the bay of Xagua, where, in the middle of the sea, it forms springs frequented by the lamantins?
To summarize: The aqueous has direct access to the anterior uveal venous system; the physiological thickening of the strands of the meshwork of the iris angle supplies a mechanical obstruction between the anterior chamber and the venous sinus of Schlemm; intra-ocular pressure stands at the same level as the intra-venous, consequently, the hydrostatic pressure is the same on both sides of the iris angle meshwork, because the canal of Schlemm is a secondary venous system; lastly, the outflow of aqueous into the venous sinus is by diffusion, not by filtration, because the pressure is the same on both sides of the meshwork.
This organ acts as a hydrostatic apparatus, increasing or reducing the specific gravity of the fish by compressing or altering the quantity of air in it. The fish can rise or sink in the water by means of it. This is the organ from which the lungs of the higher vertebrates are developed.
He was occupied in superintending the action of his hydrostatic press at Holt Forest, in Hants where upwards of 300 trees of the largest dimensions were in a very short time torn up by the roots, when he caught a severe cold, which settled upon his lungs, and his life was suddenly brought to a close on the 9th of December, 1814, in his 66th year. His friend, Dr.
Some of his most interesting experiments have to do with the subject of floating bodies. It will be recalled that Archimedes, away back in the Alexandrian epoch, had solved the most important problems of hydrostatic equilibrium.
"You can't take up those guns in your air craft, and fire them with any degree of safety." "You wait, Dad," laughed Tom. "You haven't yet seen how the Newton hydrostatic recoil operates." Ned smiled with pleasure at this.
This effect is greatly increased when the clearance given to the screw in the dead-wood is too small; for the reduction of the hydrostatic pressure at the stern-post, and the increase of it at the rudder-post, on each passage of the blades, must be followed by concussion.
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