A big brother outdoor hobby book -- a pleasant family companion to the young child's Play With Trees (P. 419). This is a round-up of trees -- classification, characteristics and identification for collections. There is a regional description of the conifers and broadleaf varieties; a section devoted to trees of interest to the hobbyist; and portraits of individual trees -- with information concerning names, peculiarities, trees in books, immigrant trees and rare specimens, and special tree expeditions. Also a glossary, bibliography and photographs. An enthusiastic text -- for nature study and hobbies.