THE CUCURBIT WILT: CAUSE 



133 



Fig. 62. — Cucumber wilt due to Bacillus tracheiphiius. A natural infection. 

 Photographed by the writer in 1893. 



Fig. 63. — .^(lunsli w ilt due to Bacillus tracheiphiius. A natural infection. (Afier 



Clinton.) 



Fig. 64. — Muskmelon wilt due to Bacillus tracheiphiius. Result of a pure culture 

 inoculation made April 15, 1896. 



