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Hab. Australia. Other Conchologists have been inclined to unite them, as some of the species of AVICULA approach to the shape of the other genus.
We shall, perhaps, best perceive the improbability of our being enabled to connect species by numerous, fine, intermediate, fossil links, by asking ourselves whether, for instance, geologists at some future period will be able to prove, that our different breeds of cattle, sheep, horses, and dogs have descended from a single stock or from several aboriginal stocks; or, again, whether certain sea-shells inhabiting the shores of North America, which are ranked by some conchologists as distinct species from their European representatives, and by other conchologists as only varieties, are really varieties or are, as it is called, specifically distinct.
Had I not been bound by an engagement at Washington, and could I have remained three or four days longer in order to label and pack them, I might have taken at once these valuable objects, which will be of great importance in verifying and rectifying the synonyms of European conchologists.
Some experienced conchologists are now sinking many of the very fine species of D'Orbigny and others into the rank of varieties; and on this view we do find the kind of evidence of change which on my theory we ought to find.
For the scientific Poet has had his eye on that structure, and he will make of it a thing of wonder, that shall rival old poets' fancy pieces, and drive our entomologists and conchologists to despair, and drive them off the stage with their curiosities and marvels.
In a very few instances, Ceylon has been indicated with precision as the habitat of particular shells, but even here the views of specific essentials adopted by modern conchologists, and the subdivisions established in consequence, leave us in doubt for which of the described forms the collective locality should be retained.
Since one of the main objects was scientific research, the expedition was provided with a philologist, naturalists, conchologists, mineralogist, botanist, draughtsmen and a horticulturist. A halt for a week was made at the Madeira Islands, when the ships headed southward, reaching Rio Janeiro late in November.
When they rise again they void this water by numerous holes, of which their legs are full. The other species of Nautilus, whose shell is thick, never quits that habitation. The shells of both varieties are exceedingly beautiful when polished, and produce high prices among Conchologists.
A marshy place, at the mouth of a small stream, was tenanted by a curious wrinkled univalve, with a notch on the outer lip, Amphibola avellana of conchologists. May 18th. I joined a party made up to visit the falls of the Keri-Keri river, and we started, after an early breakfast, in one of the ship's boats. The morning was dull and rainy, and we had occasional showers during the forenoon.
A sort of shaving soap used frequently to be advertised under a title which was as complexly adjusted a piece of mosaic work as the geologists or the conchologists ever turned out. But perhaps the confidence in the protective power of Greek designations lately reached its climax, in an attempt to save thieves from punishment by calling them kleptomaniacs.
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