3830 MINNESOTA STATE HORTICULTURAL SOCIETY. 
years, and plus the value of the thinnings. Our American people 
have not yet got to the point where they consider anything in the 
tree line valuable unless it is immediately marketable. I believe 
our people could now well afford to let pine grow on their poor 
land thirty-five years, and that it would pay well. 
Prof. Hays: What size would it become? 
Prof. Green: On good strong land I think it would attain a 
size probably up to eight inches. 
Mr. Harris: I think twelve inches. 
Prof. Green: Well, it would depend on the conditions. It — 
would have to make an exceedingly rapid growth to get up to 
twelve inches in that time. 
Prof. Hays: What are the paper companies paying for spruce 
per cord? 
Prof. Green: I don’t know; I think they are cutting it on their 
own land. 
Mr. Harris: I did not think that spruce in forests would grow 
to any such size, but I am pretty sure that white pine can be pro- 
duced from ten to twelve inches in diameter in thirty years. I have 
Norway spruce on my place some twenty years old that are prob- 
ably fifty feet high and fifteen to twenty inches in diameter. 
Prof. Hayes: I visited in Europe where the forests are man- 
aged by the government and there were no large trees. There 
were no trees over a foot in diameter; in other words, their system 
is to grow trees to ten inches in diameter and then harvest them. 
Those trees can be grown in fifty vears to that size and cut down, 
the practical way of doing the thing, and that is about the line they 
are working on. I planted some trees in my boyhood that are al- 
ready eight inches in diameter, black walnuts, and I am yet a young 
man. I believe we should try to instil courage into the people, let 
them believe the work can be done. 
Mr. Older: Ex-Governor Larrabee, of Iowa, planted a large 
amount of white pine. Mr. Hinckley went out with the governor 
and he showed him that those trees were increasing in value at the 
‘rate of one dollar per tree each year, and they were set out thirty 
years ago. Each tree is gaining one dollar per year. At the mar- 
ket value of $18 per thousand they were figuring that the trees 
were paying a dollar a year each. 
Prof. Hays: How many trees did he plant? 
Mr. Older: There were twenty trees to the acre. The gov- 
ernor considered he was making money faster than in any other way 
he could make it. 
