The gravel beds of Finchley, which belong to the Drift or Boulder-clay series, have yielded to the researches of Mr. N. T. Wetherell, of Highgrate, many specimens of Flints, containing fossils of the Chalk formation,—of these, the genera Inoceramus and Pecten are most abundant, associated with which are casts of Ammonites, and specimens of Terebratula, Rhynchonella, Dianchora, Lima Hoperi, Spondylus spinosus, and many Echinoderms, as Micraster, Cardiaster, (similar to one from Northfleet,) two or three species of Cidaris, Cyphosoma, Ananchytes, Galerites, but with these it is important to notice there are sometimes found silicified specimens of Venericardia planicosta, a condition in which these shells are rarely found in their original Eocene beds.