19Q6 



FORESTRY AND IRRIGATION 



385 



sary to classify a large amount as 

 "mixed" or "miscellaneous." 



Round Timber. 



Kind 



Yellow Pine . . . . 



Oak 



Hemlock 



Pitch Pine 



Chestnut 



Beech 



Jack Pine 



Spruce 



Mixed Hardwoods 

 Mixed Softwoods . 

 Miscellaneous . . . 



Total 



Cubic 

 Feet 



9,250,000 



6,220,000 



1,180,000 



590,000 



444,000 



236,000 



165,000 



115,000 



10,263,000 



477,000 



23,500,000 



52,440,000 



Of the species used for round tim- 

 ber, yellow pine, of which a large 

 amount is loblolly pine from the South, 

 furnishes one-half. Oak ranks next, 

 but furnishes a much smaller propor- 

 tion according to the reports. The 

 oak would unquestionably be increased 

 if the large items reported as "mixed 

 hardwoods" and "miscellaneous" 



could be separated into species, and it 

 is not improbable that oak would then 

 displace yellow pine in rank. 



Sawed Timber. 



Kind 



Board 

 Feet 



Hemlock 



Yellow Pine . . . . 



Oak 



Maple 



Spruce 



White Pine 



Pitch Pine 



Mixed Hardwoods 

 Mixed Softwoods . 

 Miscellaneous . . . 



Total 



63,600,000 



14,200,000 



2,860,000 



1,740,000 



371,000 



328,000 



84,000 



28,642.000 



1,370,000 



8.370,000 



121,565,000 



For sawed timber hemlock holds 

 first place in quantity, while yellow 

 pine ranks next. The amount of oak re- 

 ported is doubtless too small, but an 

 explanation is found in the classifica- 

 tion for "mixed hardwoods" and "mis- 

 cellaneous," which ontains over 37,- 

 000,000 feet board measure, of which 

 probably a large amount is oak. 



WOODLOT THINNING 



Description of Work Done at 

 Michigan Agricultural College 



BY 



Professor E. E. BOGUE 



/^ NE of the woodlots on the Michi- 

 ^-^ gan Agricultural College farm con- 

 tains seventy-seven acres. Ten years 

 ago ten acres of this piece were cut 

 over and all of the trees large enough 

 for wood were taken out. It has been 

 allowed to grow undisturbed. In May 

 of the present year a class of forestry 

 students thinned seven-tenths of an 

 acre of this cut-over land. The ac- 

 companying illustration shows the stu- 

 dents at work. 



An accurate record was kept of the 

 number and size of each species cut. 

 The table here presented shows the 

 twenty species found growing on the 



plat arranged from left to right in or- 

 der of occurrence on the area. The 

 plat selected was considered to be a 

 fair average. It was necessary to 

 leave some specimens of the less de- 

 sirable species, such as maple, in or- 

 der to have sufficient shade to keep out 

 grass. It will be noticed that a few 

 small specimens of undesirable species 

 were found in the last count. This 

 comes about from their having been 

 over-looked when cutting. 



Based on this fraction of an acre 

 calculation is made as to the number 

 of each species per acre and the whole 

 number, which is 5,562. This niim- 



