Submersed leaves reduced to narrowly grass-like or filiform sessile phyllodia.
Submersed aquatic (sometimes terrestrial), rooting in the mud, with opposite linear leaves, and very small greenish flowers solitary in their axils.
Defn: Any plant of the genus Myriophyllum, aquatic herbs with whorled leaves, the submersed ones pinnately parted into capillary divisions.
Defn: A genus of aquatic flowering plants, in which the submersedleaves bear many little utricles, or ascidia.
A genus of aquatic flowering plants, in which the submersed leaves bear many little utricles, or ascidia.
Two of these were exposed to the free action of the air, and the other two were submersed in water previously deprived of air by boiling; a similar temperature being maintained in each medium.
Having submersed animals in water of various temperatures successively, so as to bring them under the influence of variable temperature, he found the descending scale of temperature the most hurtful.
These comparisons were frequently repeated, and upon frogs and toads, with the same results, showing the experiments in air to be far more favourable to their existence than with the animals submersed in the water.
When animals are submersed in water, their skins exercise two functions, acting inversely in determining their weight.
As a comparative illustration, an equal number of frogs were submersedin water, all of which died in about ten or eleven hours, while those which were strangled lived from one to five days.
On the sixteenth day the toads in the boxes were discovered alive, and thus the fact was established that these animals can live far longer in a state of asphyxy confined in solid substances, than when submersed in water.
Fish possess only the means of aquatic respiration, and the influence of temperature was tried upon them submersed in water deprived of its air by previous boiling, the heat being varied from 0° to 40°.
But [p297] those of the large vessel, and not submersed in the river, passed through their changes of form without the least appearance of the phenomenon being retarded.
The other five toads were at the same time submersed in water, and at the expiration of eight hours they were found to be dead.
In four or five hours, those submersed in the non-arëated water ceased to be active, unless irritated, when they still appeared to retain voluntary power.
