THE report of the Forest Products Research Board for the year 1937 forms an introduction to the report of the Director of Forest Products Research at Princes Risborough for the same year (London: H. M. Stationery Office, 1938. 2s. net). The Research Board briefly reviews the work of the year and the measures laid down to be observed in future in the preparation of reports on mechanical tests of timbers; the grading of structural timbers; and plywood and other materials built up from wood. An extensive investigation into the latter and allied materials is proposed; a study being made of 'composite wood', that is, of industrial materials made of laminated or disintegrated wood. An investigation is also to be carried out into the possibility of producing from home-grown timbers charcoal for use in the chemical and other industries, a prominent manufacturing firm having made an offer of a grant towards the cost of this work. The Director in his report acknowledges the important direct help which the physicist and chemist can give to the various branches of the timber-using industry.