Book reviews : Ager,D.V. 1993: The new catastrophism: the importance of the rare event in geological history. Cambridge: Cambridge University Press. xx + 236pp. £22.95 cloth,£13.95 paper. ISBN: 0 521 42019 9 (cloth),0 521 44492 6 (paper)

Book reviews : Ager,D.V. 1993: The new catastrophism: the importance of the rare event in geological history. Cambridge: Cambridge University Press. xx + 236pp. £22.95 cloth,£13.95 paper. ISBN: 0 521 42019 9 (cloth),0 521 44492 6 (paper)