FORESTRY LESSORS ON HOME WOODLANDS. 



27 



Circulars 45, 81, 99, and 208 ; Department Bulletin 153 ; Department 

 Circular 8. 



Illustrative material. — Make a collection of seed specimens of the 

 classes indicated under " Topics for study." Either mount these seeds 

 on cardboard or put them in wide-mouth bottles. Clip pictures of 

 young forest growth. 



Topics for study. — Seeds : The various devices of nature for dis- 

 persing the seed widely. Tree fruits with (a) wings, plumes, etc., 

 (b) pulpy fruit with bony seeds sought by birds, (c) rich nut 

 kernels liked by rodents and birds, and often buried or otherwise 



Fig. 15. — Effect of light supply upon the form and commercial value of trees. A, Elm 

 which grew up among other trees of the same height but since cut down. Clear trunks 

 make valuable lumber. B, This elm grew standing in the open. Trees with short 

 limby trunks are useful chiefly as firewood. 



stored away, (d) light seeds which float or roll along the bottom of 

 streams. Species of trees whose seeds are (a) carried by wind, (b) 

 water, or by (c) birds and animals. (Fig. 16.) 



Sprouts : Different species of trees which reproduce themselves by 

 means of sprouts from stumps. From what part or parts of the 

 stump do sprouts arise? Species which sprout from surface or lat- 

 eral roots. Influence of the season of the year when cutting is done 

 upon the vigor and growth of sprouts. Influence of age of parent 

 tree upon success of sprouting. 



Natural forest reproduction: Young growth. (Fig. 17.) Condi- 

 tions under which young growth starts in woodlands. A forest 



