Book reviews: Whitmore,T. C. 1975: Tropical rain forests of the Far East. Oxford: Clarendon Press. xiii+282 pp. £I2.50

Cleaver, E.T. , Godfrey, A.E. and Bricker, O.P. 1970: Geochemical balance of a small watershed and its geomorphic implications. Bulletin of the Geological Society of America 81, 3015-32.

Garrels, R.M. and Christ, C.L. 1965: Solutions, minerals and equilibria. New York: Harper and Row.

Hope, G.S. 1976: The vegetational history of Mt Wilhelm, Papua, New Guinea . Journal of Ecology 64, 627-63.

Kershaw, A.P. 1976: A late Pleistocene and Holocene pollen diagram from Lynch's Crater, NE Queensland, Australia. New Phytologist 77, 469-98.

Lowe-McConnell, R. H., editor, 1969: Speciation in tropical environments. Biol. J. Linn. Soc. Lond. I, I-246.

Niewolt, S. 1965: Evaporation and waterbalances in Malaya. Journal of Tropical Geography 20, 34-53.

Simonett, D.S. 1967: Landslide distribution and earthquakes in the Bewani and Torricelli Mountains, New Guinea. In Jennings, J. and Mabbutt, J. A. , editors, Landform studies from Australia and New Guinea. Cambridge : Cambridge University Press.

Sommer, A. 1976: Attempt at an assessment of the world's tropical moist forests. Unasylva 28, 5-24.