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THE POPULAR SCIENCE MONTHLY 



distinguished in the lumber market or in the census returns. But re- 

 ports on the wood-using industries of Michigan, "Wisconsin and Minne- 

 sota, prepared in recent years by members of the U. S. Forest Service 

 and published by the respective states, give the amount of each kind 

 of wood used by manufacturers (i. e., that which passes beyond the 

 stage of rough lumber, even if it is merely planed) in each state in a 

 year, and distinguishes between lumber cut within the state and that 



Young Teees of Red Pine (I'iinis resinosa) in Brush Land Subject to Frequent 

 Fires, Cheboygan Co. Michigan. August, 1912. 



brought in from other states. From these we learn that the manu- 

 facturers of Michigan use in a year about 10 million feet of home-grown 

 red pine, those of Wisconsin something over 6 million, and in Minnesota 

 167 million. (The corresponding figures for white pine are 70, 72 and 

 455 ; and both added together are less than half the total lumber produc- 

 tion of the two species for these states as reported by the Tenth Census.) 



The Hemlock (Tsuga Canadensis) 1 ® has a distribution very similar 

 to that of the white pine, except that it is a little more southerly. It 

 grows in several counties of Alabama, in which state the white pine is 

 unknown. It commonly grows mixed with various hardwood trees and 

 sometimes with white pine besides. It prefers moderately dry soils with 

 considerable humus, perhaps more than any other eastern conifer. (The 



io Also called "spruce pine" in Georgia and Alabama, if not farther north. 

 The settlement of Spruce Pine, Ala., takes its name from this tree (see Ball. 

 Torrexj Bot. Club, 33: 524. 1906), and the same may be true of the place sim- 

 ilarly named in North Carolina and even of Spruce, Ga. 



