4-3 



FOREST commissioner's REPORT. 



ticular tract in hand a growth in diameter of an inch in five years 

 might reasonably be expected of the trees left, at which rate it 

 would take them about fifteen years to double in volume of mer- 

 chantable timber. The yield now of the acre is about nine thous- 

 and of second grade lumber. I think it not unreasonable to think 

 that, if allowed after this cutting to remain untouched for fifty 

 years it might produce five times that amount, much of the cut of 

 the finest quality. 



It is understood of course that this is an exceptional acre, but it 

 is probable that on tracts less heavily timbered proportional results 

 would hold. Devoting so much attention to the pine let us turn to 

 the subsidiary species on the ground. The number and size of 

 them will best be understood if the score of the whole acre is before 

 us. This can then be compared with subsequent figures of the 

 same nature and what is general and typical gathered by compari- 

 son and from the general description and discussion. 



Summary of growth on an acre of land in Towns/up 1, Range 7, 

 Penobscot County. Land burnt in 1825. Diameter of trees 

 measured four and one-half f^ el from the ground. 



5,565 



Next in number to the pine it will be noted are the spruce. One 

 hundred and ninety four to the acre is probably more than would 

 usually be found, but the size and development of the trees are 

 thoroughly typical. The two largest are nine and ten inches in 

 diameter and represent, it may be said, about the largest develop- 



