3’8 
N. C. Experiment Station 
excessively dry weather resulted in poor growth. When examined on 
September 18, no anthracnose was found on either the treated or untreated 
seed plots. The seed planted on the farm near Statesville had received 
treatment consisting of desiccation for 16 hours at 45-50° C. followed by 
heating for 24 hours at temperatures ranging between a minimum of 80° C. 
and a maximum of 90° C. When these test plots w^ere examined on October 
3, 6 per cent of the plants on the treated seed plot and 5 per cent on the 
untreated seed plot were found to be diseased. Slightly less than 1 per cent 
of the plants of the general crop of Early King cotton growing near by were 
diseased. The seed which were planted near Willard had been desiccated 
for 20 hours at 45-50° C. and heated for two 10-hour periods on two 
Plate 1. The seed treating machine. Front and right end view showing the speed 
reducing gears and two thermometers in position. 
successive days at temperatures between a minimum of 70° C. and a 
maximum of 85° C. When these plots were visited on August 15, no an¬ 
thracnose was found on either the treated or untreated seed plots, although 
the treated and untreated seed were planted through misunderstanding in 
adjoining plats. On September 18, 30 per cent of the plants both on the 
treated and on the untreated plots bore one or more infected bolls. Since 
anthracnose lesions appeared to have originated at punctures made by 
boll weevils, these insects were suspected of being responsible for this 
distribution of disease in both plots. Accordingly, a large number of 
them (99 in all) were collected in sterile tubes and carried back to the 
laboratory. Each weevil was shaken in 5cc. of water which was in turn 
poured into a plate of sterile nutrient agar. Colonies of the anthracnose 
developed in 17 per cent of the plates and in about one-third of these, 
anthracnose was the dominating flora. It is highly probable, therefore, 
