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Updated: May 31, 2025
Dall, ever alive to the interests of his beloved science, grasped me cordially by the hand, saying, "Good-bye, George. God bless you! Keep your eye out for land-snails and skulls of the wild animals!"
Now, I myself observed that several of these bits of broken trees, torn down by floods in heavy storm time from the banks of Spanish or Portuguese rivers, reached my island in eight or ten days after leaving the mainland, and sometimes contained eggs of small land-snails.
Freshwater snails and mussels, in cold weather, bury themselves in the mud of ponds or rivers; and land-snails hide themselves in the ground or under moss and leaves. The heart then ceases perceptibly to beat, but respiration continues in a very faint degree.
If the antediluvian sinners were any thing like the modern ones, Noah must have been richer than the Rothschilds, or he never could have obtained their services; which he must have done, or it could never be truthfully said, "according to all that God commanded him, so did he." The collection of the land-snails alone would be no small tax.
Agassiz, L., on conscience in dogs; on the coincidence of the races of man with zoological provinces; on the number of species of man; on the courtship of the land-snails; on the brightness of the colours of male fishes during the breeding season; on the frontal protuberance of the males of Geophagus and Cichla; male fishes hatching ova in their mouths; sexual differences in colour of chromids; on the slight sexual differences of the South Americans; on the tattooing of the Amazonian Indians.
Occasionally, too, very minute land-snails would arrive alive on the island after their long sea-voyage on bits of broken forest-trees a circumstance which I would perhaps hesitate to mention in mere human society were it not that I have been credibly informed your own great naturalist, Darwin, tried the experiment himself with one of the biggest European land-molluscs, the great edible Roman snail, and found that it still lived on in vigorous style after immersion in sea-water for twenty days.
The land-snails inhabiting the various groups of islands scattered throughout the vast extent of the Pacific Ocean provide the richest and most ideal material for the demonstration of the principles of geographical distribution.
Insects and flies of every kind, scorpions, spiders, centipedes, land-snails and earth-worms were all flourishing in the forests of New Zealand a thousand years ago, serving in large measure as the food of birds, fish and lizards. The rest of the world except New Zealand! Strange as Australia is, New Zealand is yet stranger.
Most of the erect and prostrate trees had become hollow shells of bark before they were finally embedded, and their wood had broken into cubical pieces of mineral charcoal. Land-snails and galley-worms Xylobius crept into them, and they became dens, or traps, for reptiles. Large quantities of mineral charcoal occur on the surface of all the large beds of coal.
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