. The ecology and life history of the common frog (Rana temporaria temporaria) . 400 lO 20 30 10 20 30 APRIL MAY 8 9 19 29 9 19 29 JUNE JULY Fig. II. Hospital Pond, 1948 This pond was not discovered until 20th May, and the thin Hne is an extrapolation. The graph shows good growth, but somewhat delayed metamorphosis. Cat Hill Pond This pond (Fig. 13) was only observed in one season. The pond, like Lower Parkfield, is fringed with trees and has a permanent sub- stratum of decaying leaves. Tadpoles were always scarce, but, as in Lower Parkfield in the later years, grew to an exceptional size, one

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Keywords: ., bookcentury1900, bookcollectionbiodiv, booksubjectranatemporaria