Bui. 818, U. S. Dept. of Agriculture. 
Plate I 
Fig. I. —Tomato Plants from Treated and Untreated 4- Inch Pots of Experi- 
ment Series I. 
B, Uninfected healthy roots grown in nematode and fungous infested soil submerged for 2| minutes in 
boiling water (98° C.) (natural size); A and C, plants with nematode root and stem galls and Rhizoc- 
tonia root discolorations grown in untreated infested soil in check pots. (Enlarged three times.) 
Fig. 2.— Four-Inch Pots of Experiment Series I Two Weeks After Planting. 
Note the full stand and vigorous appearance of the tomato seedlings in pots A, B, and C submerged for 
2J, 5, and 10 minutes, respectively, in boiling water, compared with the very poor stand, smaller size, 
and damping-off of plants in the untreated check pot-D. 
