The forest nursery : collection of tree seeds and propagation ofseedlings . Fig. 2.—Chestnut Oak Acorns after an early spring forest fire has burned offthe protecting cover of leaves, showing the germination last fall of several ACORNS UNDER THIS PROTECTION. MARYLAND. COLLECTION OF TREE SEEDS. i9 Hemlocks. Cvpross. Ar])()rvit{rs, Birches, Alders, and Tulip-tree havemat ur(\seedsuiul(^rtluMr scales from one to several weeks ])efore the cones.

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