Bui. 440, U. S. Dept. of Agriculture. 
Plate IV. 
F-I5749-A 
Fig. 1.— A Pair of Stiff-Tongue Big Wheels at the Landing, Ready to Unload. 
F-I6759-A 
Fig. 2.— Slip Tongue Big Wheels with a Load of Logs, Arriving at a Mill Pond. 
