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Updated: May 18, 2025
In the case of the prawn-like crabs, their movements were as coinstantaneous as in a regiment of soldiers; but this cannot happen from anything like voluntary action with the ovules, or the confervae, nor is it probable among the infusoria. Secondly, what causes the length and narrowness of the bands?
We sailed from Bahia. A few days afterwards, when not far distant from the Abrolhos Islets, my; attention was called to a reddish-brown appearance in the sea. The whole surface of the water, as it appeared under a weak lens, seemed as if covered by chopped bits of hay, with their ends jagged. These are minute cylindrical confervae, in bundles or rafts of from twenty to sixty in each. Mr.
But, as it is known, the filtering beds of the basins in the water conduits are soon covered with a thick coating of confervae, and the Limnophysalis hyalina then extends from the deepest portions of the filtering beds into the filtered water subjacent.
Flamingoes in considerable numbers inhabit this lake, and breed here, throughout Patagonia, in Northern Chile, and at the Galapagos Islands, I met with these birds wherever there were lakes of brine. I saw them here wading about in search of food probably for the worms which burrow in the mud; and these latter probably feed on infusoria or confervae.
We sailed from Bahia. A few days afterwards, when not far distant from the Abrolhos Islets, my attention was called to a reddish-brown appearance in the sea. The whole surface of the water, as it appeared under a weak lens, seemed as if covered by chopped bits of hay, with their ends jagged. These are minute cylindrical confervae, in bundles or rafts of from twenty to sixty in each. Mr.
Near Keeling Atoll, in the Indian Ocean, I observed many little masses of confervae a few inches square, consisting of long cylindrical threads of excessive thinness, so as to be barely visible to the naked eye, mingled with other rather larger bodies, finely conical at both ends. Two of these are shown in the woodcut united together.
The banks of travertine are everywhere covered with reeds, lichens, confervae, and various kinds of aquatic vegetables, and, at the same time that the process of vegetable life is going on, the crystallisations of the calcareous matter, which is everywhere deposited in consequence of the escape of carbonic acid, likewise proceed, giving a constant milkiness to what, from its tint, would otherwise be a blue fluid.
We found it covered with green confervae; a double border of pistia and broad-leaved reed grasses, six to seven feet high, enclosing it all round. On the south and west some low hillocks rose up, while from the middle it appeared to be almost circular, with a girdle of forest. Soundings showed a gently inclined basin, eight brazas, or over thirteen meters, deep in the middle.
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