THE TROUT. By W.E. Frost and M.E. Brown. New Naturalist Monograph No. 21.

(1967) 1972 reprint. 8vo (141 x 205mm). Pp286. Colour plate, b/w photographs, illustrations, bibliography. Green cloth.

The most definitive monograph on the ecology of the brown trout. Chapters include: Anatomy and physiology; Taxonomy; Distribution; Life History; Age and growth; Heredity; The physical environment; The trout's food; The biological enivronment; Trout and man. Appendices include; The routine examination of trout; Age and growth determination from trout scales; Rivers; Lakes; How to calculate specific growth rates; Specific growth rates; Examination of stomach contents of brown trout; List of waters for which we have data on total hardness.