1906 



FORESTRY AND IRRIGATION 



387 



ber is much larger than is usually 

 found in woodlots, especially those 

 that have been pastured and those 

 where the trees are older. In this piece 

 of timber grape vines and bitter-sweet 

 have hindered the growth considerably 

 by climbing up and shading under- 

 growth. Many of these had been cut 

 years previous and the few that were 

 over-looked at that time showed what 

 might have been the condition at the 

 time of thinning. 



At the rate this work was done it 

 would take a man six days to thin one 



By taking the total per acre of the 

 eight valuable species black cherry, 

 basswood, red oak, white oak, bitter- 

 nut, white ash, hickory, and white- 

 wood , we have a total of 901 trees or 

 a stand, if evenly distributed, where 

 the trees would be between six and 

 seven feet apart each way. 



The average diameter for each 

 species and for all was calculated. Ar- 

 ranged from greatest to least, the 

 species have the following rank and 

 average diameter : 



Whitewood 3.73. 









Forestry Students Thinning a Woodlot at Michigan Agricultural College 



acre, but a man accustomed to physi- 

 cal labor and the use of the ax ought 

 to thin an acre of this timber in two 

 or three days. Old stands of timber 

 where a large percent of the small 

 stuff has been smothered out could be 

 thinned much more rapidly. This 

 thinning might better have been done 

 five years ago, for then the trees to 

 be saved would have been produced. 

 Some of these now are too tall and 

 slender to stand erect when those 

 around them have been removed. 



Poplar 2.88. 

 Basswood 2.35. 

 White ash 2.12. 

 Bitternut 2.12. 

 Sassafras 1.96. 

 Elm 1.89. 

 Black cherry 1.88. 

 White oak 1.68. 

 Soft maple 1.68. 

 Red oak 1.65. 

 Hickory 1.45. 

 Thorn apple T.33. 

 Dogwood 1.20. 



