EXPERIMENT STATION BULLETINS. 



483 



Nearly one-third of all the iron ore and approximately one-sixth of 

 all the copper produced in the United States are mined in the Upper 



Peninsula of Michigan. 



LUMBERING. 



The timber resources of the district are estimated at 30 billion board 

 feet of standing timber. The annual sawmill cut amounts to about 

 800,000.000 board feet. There is also cut an amount of pulpwood, rail- 

 road ties, fence posts, poles, chemical and firewood which totals about 

 as much material as is represented in the sawmill cut. The natural in- 

 crease, together with the timber now standing, allows for about a forty 

 year cut at the present rate before the present supply is exhausted. 

 Estimating the standing timber as worth flO.OO per thousand board 

 feet, the annual production would have a combined value of from 

 000,000 to 110,000,000 per year. 



L2, 



AGRICULTURE. 



Tliat substantial increases have been made within the last ten years 

 is shown by statistics on the agriculture of the Upper Peninsula. In 

 1010 there were in this section but 8,994 farms, containing 912,080 acres, 

 of which 37 per cent or 339,602 acres were improved. In 1920 there were 

 12,317 farms, containing 1,181,000 acres, of which 39.4 per cent or 



Pisr. 3. Sheep on cut-over pasture. There are thousands of acres of fine pasture land 



now lyins idle in the Upper Peninsula. 



465,540 acres were improved. In ten years the number of farms in- 

 creased 37 per cent, the land in farms increased 29 per cent, and unim- 

 proved land in farms increased 37 per cent. The land in farms in pro- 

 portion to the whole area increased only 2.5 per cent during this period. 

 The total 1920 value of all farm property, land, buildings, imple- 



