150 ILLINOIS STATE ACADEMY OF SCIENCE 



and it does not apparently spread fartlier from the one 

 spot, all further damage to a green resulting from the 

 new infections. 



A stalk rot of corn made its appearance in some of the 

 fields of Monroe and Jackson counties. This stalk rot 

 appears to be of bacterial origin, is not grossly similar 

 to Stewart's disease, and has certain points of similarity 

 with a disease described by Eosen as appearing in Arkan- 

 sas. 



SURVEY SERVICE 



The Plant Disease Survey has assisted in the quaran- 

 tine area in Madison County, where a program of control 

 and eradication is being waged by the State of Illinois 

 Department of Agriculture against the recently intro- 

 duced flag smut of wheat caused by TJrocystis tricici. 



There is also available, through the efforts of the sur- 

 vey, a complete list by parasite, by host, 'and by locality 

 of every disease so far known to exist within the state. 

 A bibliography, comprising about 325 titles, indexes all 

 publications concerning the presence of plant diseases 

 in Illinois. 



