National Geographic : 1932 Dec
PUTTING TEETH IN A SAW A workman fitting with a full set of teeth one of the largest circular saws ever made. The saw, iino inches in diameter, is made of crucible electric tool steel, weighs 795 pounds, and boasts 190 teeth. The Disston saws, made in Philadelphia, are known and used all over the globe. Photograph by Clifton Adams and Edwin L.Wisherd A WINDOW OF JOHN BARTRAM'S HOUSE This old stone house was built bythe famous botanist with his own hands. The inscription, which he himself chiseled on the stone over the window, is one of the quaintest in Philadelphia and the house ismuch visited bylovers of Americana.