Page:The Geologist, volume 5.djvu/80

60 fry of the Mollusca, are becoming more and more valuable as leading characteristics of strata, as our knowledge of these microzoa in the fossil and recent states advances.

Such researches as these, made on any series of deposits, whether British or foreign, must be of use, either for the improvement and correction of observations already made and published, or for the groundwork of future descriptions of strata and their fossils.

Schafhäutl, Sorby, Ehrenberg, Reade, Bryson, and others, have worked at this subject in their own several ways, and it is to be hoped that not only will these older labourers continue to work in "Microgeology" or "Clinology," as the study is termed, but that others, with equal patience and acumen, will come forward to labour in this wide and promising, but as yet little cultivated field of research.

No. 1. Light-blue sandy clay; very friable; full of crushed shells.

Quantity examined, 480 grains.

No. 2. Very light-blue, friable, sandy clay.

Quantity examined, 480 grains.

No. 3. Dark-green clayey sand; very friable.

Quantity examined, 3840 grains.