The Smallest of Living Things 



245 



U. S. D. A. 

 FIG. 196. Two kinds of smut of oats; the effect on heads. 



(" Cide " is from the Latin, and, when attached to the 

 end of a word, it means " killer.") 



Insects and fungi are so different that what will kill 

 one may not do the other any harm at all. However, 

 to make one spraying do double duty, a fungicide and 

 insecticide are often mixed, and both being applied at 

 once, insects and fungi are destroyed together. 



The oldest and most generally used of the fungicides Bordeaux 

 is Bordeaux mixture. Its value was discovered by a mixiare 

 vineyardist near Bordeaux, France, who sprayed his 



