Bui. 479, U. S. Dept of Agriculture. 
Plate XIX. 
Fig. 1.— Tree Digger in Use at Bessey Nursery. 
Weight approximately 400 pounds. 
1 
Fig. 2.— Tree Digger in Actual Operation. 
Four men are required to pick the loose trees from the soil as it breaks over the rear of the knife^ 
