20 MICHIGAN ACADEMY OF SCIENCE. 



68. Observe for some rears the kinds, thickness, shape, size of tops 

 of young trees from two to ten feet high and much crowded to see 

 iibout dying branches and dving trees. 



09. Comjiare the appearance, external and internal of trees grown, 

 north and south. 



70. Study areas of oak openings, of "timbered land," and try to make 

 out all points of difference and try to account for these differences. 



71. Pass over an old forest and studv it with reference to removing 

 ripe trees and younger trees of slow growth or poor quality. 



72. Note where one hundred to one thousand or more trees are grow- 

 ing in a forest and trv to account for their distribution. 



73. Knowing the nature of the soil for any acre or more, what are 

 the kinds of timber and the quality, also the kinds of shrubs and herbs? 

 What kind of roots have the perennial herbs for each kind of soil, as 

 on hills, upland, river bottom, clay, sand, loam? 



74. Note what trees seem to be dying at the top in several forests, 

 and search for the reason. 



75. What are all the sorts of trees and shrubs, surrounding a first- 

 class tree and the soil and climate of the locality. 



76. Compare a number of trees of a number of species found on 

 the north slope, on the south, on the east, on the west. iVre any 

 species doing better on the north slope? on the south slope? and which 

 species, if any, and the probable reasons? 



77. Study the sizes and shapes and texture of leaves of white oak as 

 found on lower limbs in the shade, in exposed places, also, note those 

 at the top of the trees, and near the center of the top. The same "for 

 any number of other species. If duplicates are observed and compared, 

 all the better. 



78. In addition to anv of the foregoing, it will be useful to studv all 

 the details possible in a large number of good places in a forest, i. e., 

 in a good forest. Note, almost by diagrams the positions occupied by 

 the leading trees of each species, their relative heights, and sizes, the 

 nature of the undergrowth, the dead leaves, sticks, logs, every detail. 



79. After much time in studying this many-sided question, begin to 

 make plans for growing good timber to advantage, whether they are 

 ever carried out or not. 



