DP - MPI Library TY - JOUR AU - Tyrrell, G. W. T1 - GEOLOGY UR - https://www.jstor.org/stable/43412027 T2 - Science progress : over 100 years of reporting science SP - Vol. 32, No. 125 (1937), p. 104-112 CY - London : Science Reviews 2000 Ltd PY - 1937 ER -