IN this little book, Mr. M. R. K. Jerram states that the word ‘elementary’ has been prefixed to the title as the work is intended chiefly for the professional forester rather than research specialist, and he has been guided in his method of treatment of the subject by this factor. For the greater number of professional foresters, either in being or still in the student stage, forest mensuration is a practical part of their work-the higher branches of the subject are required by the research worker alone. Still, the author gives an account of a few of the less well-known methods in use by research workers. Otherwise in his treatment of the subject Mr. Jerram deviates but slightly from the ordinary lines, which are not capable of much variation. An interesting chapter on “The Measurement of Forests” is contributed by Mr. R. Bourne, late lecturer in forestry at Oxford University. The book may be recommended as a useful text-book.
Elementary Forest Mensuration
By M. R. K. Jerram; with a Chapter on The Measurement of Forests, by R. Bourne. Pp. x + 124. (London: Thomas Murby & Co., 1939.) 8s. 6d. net.