Bui. 1239, U. S. Dept. of Agriculture. 
PLATE III. 
Fig. I.— Seeds Immersed 30 Minutes in a I to 320 Solution. 
The lot of seed at the left was hand threshed: that on the right, machine threshed. 
Fig. 2. — Seeds Immersed Five Hours in a I to 320 Solution. 
The lot of seed at the left was hand threshed; that on the right, machine threshed. 
EFFECT OF FORMALDEHYDE ON THE GERMINATION OF 
HAND-THRESHED AND MACHINE-THRESHED WHEAT KER- 
NELS. 
