Bui. 1484, U. S. Dept. of Agriculture 
Plate 2 
Effects of Environment on Severity of Crazy-Top Disorder 
A. — The outside rows of plants, which had less competition for water than the inside rows, 
showed only slight effects of crazy-top, whereas the latter were nearly all affected and 
almost sterile. 
B. — An example of the tendency of outside rows of cotton to avoid or resist crazy-top dis- 
order while inside rows may be seriously affected 
