National Geographic : 1952 Mar
U .atlonal ueograpnllc soelety 4 Soil Scientists Weigh Hay Grown on Test Plots near Chesaning Michigan State College agronomists subject small plots on this farm to several different systems of crop rotation. Weighing hay to learn each experiment's yield, professor and students here seek the best crop sequence. Certified seed is a Michigan specialty. 304 Kodaclirrouies by Anllrew 11. Urown + Big Wheels Straddled and Lifted Logs for Summer Hauling Michigan with its pine lumber largely built the Prairie States. In the 1870's it led the Nation in pro duction; its 1,600 sawmills cut more than three billion board feet a year. This antique carrier rests in Hart wick Pines State Park near Grayling.