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It is a remarkable fact, as he justly observes, that the angiospermous exogens, which comprise four-fifths of living plants a division to which all our native European trees, except the Coniferae, belong, and which embrace all the Compositae, Leguminosae, Umbelliferae, Cruciferae, Heaths, and so many other families are wholly unrepresented by any fossils hitherto discovered in the Primary and Secondary formations from the Silurian to the Oolitic inclusive.
Opposite to where I struck it stood an extraordinary hill or ridge, consisting of a huge red turtle back having a number of enormous red stones almost egg-shaped, traversing, or rather standing in a row upon, its whole length like a line of elliptical Tors. I could compare it to nothing else than an enormous oolitic monster of the turtle kind carrying its eggs upon its back.
And even as regards the Mammalia, the scanty remains of Triassic and Oolitic species afford no foundation for the supposition that the organization of the oldest forms differed nearly so much from some of those which now live as these differ from one another.
Hooker, that there are Carboniferous plants which appear to be generically identical with some now living; that the cone of the Oolitic 'Araucaria' is hardly distinguishable from that of an existing species; that a true 'Pinus' appears in the Purbecks, and a 'Juglans' in the Chalk; while, from the Bagshot Sands, a 'Banksia', the wood of which is not distinguishable from that of species now living in Australia, had been obtained.
The same geologist has also found, since we were at Biddenham, several other flint tools of corresponding type, both there and at other localities in the valley of the Ouse, near Bedford. Oolitic strata. 2. Boulder clay, or marine northern drift, rising to about ninety feet above the Ouse. 3. Ancient gravel, with elephant bones, freshwater shells, and flint implements. 4.
Tertiary deposits also appear in a less elevated position on the flanks of the Eastern Alps; but in the Central or Swiss Alps, the Palaeozoic and older Mesozoic formations disappear, and the Cretaceous, Oolitic, Liassic, and at some points even the Eocene strata, graduate insensibly into metamorphic rocks, consisting of granular limestone, talc-schist, talcose- gneiss, micaceous schist, and other varieties.
But its oolitic hills, gently swelling to above 700 feet, and the valleys of the many rivers which flow from this central watershed, west and east, are covered with fat vegetation almost equally divided between grass and corn, with green crops. The many large estates are rich in gardens and orchards. The farmers, chiefly on small holdings, are famous for their shorthorns and Leicester sheep.
Near Clermont, in Argonne, a few leagues from St. Menehould, where these indurated marls crop out from beneath the Gault, I have seen them, on decomposing, leave the surface of every ploughed field literally strewed over with this fossil oyster. The real nature of the shell, of which there are many species in oolitic rocks, is still a matter of conjecture.
In proof of this he called attention to the entire absence of Ammonites, Belemnites, Brachiopoda, Echinodermata, Corals, and other marine fossils, so characteristic of the Cretaceous rocks above, and of the Oolitic strata below, and to the presence in the Weald of Paludinae, Melaniae, Cyrenae, and various fluviatile shells, as well as the bones of terrestrial reptiles and the trunks and leaves of land-plants.
It was an article describing some oolitic formations she had been much interested in when at the old home; and she told of her ramblings, speculations, and discoveries, in a modest, face-to-face way which gave them a certain interest in addition to their scientific value.
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