VI 



PAGE 



Sweet Potato 243 



Cantaloupe 244 



Watermelon 245 



Cucumber 247 



Asparagus 249 



Beet and Swiss Chard 250 



Cabbage 250 



Cauliflower 252 



Bean 252 



Onion 253 



Lettuce 253 



Rhubarb , 254 



Radish 255 



Horseradish 255 



Diseases of ornamental plants 256 



Rose 256 



Lilao 257 



Carnation 257 



Virginia Creeper 258 



Snapdragon 258 



Summary and conclusion 259 



Tables of crop reduction and losses (1-42) 260 



Maps illustrating the distribution of the diseases discussed in the 



text (1-136) 281 



ARTICLE V. CHANGES IN THE SMALL BOTTOM FAUNA OF 

 PEORIA LAKE, 1920 TO 1922. BY ROBERT E. RICHARDSON. 



(3 Gkaphs) August, 1924 327-388 



Introduction 327 



Description of the old bottom fauna 327 



Terminology with reference to degree of pollution and tolerance.... 333 



Hydrographical subdivision 334 



Summary 336 



Upper Peoria Lake and the Illinois River, Chillicothe to Spring Bay. 

 (Mile 146.5—153.2 below Lake Michigan): 



Hydrography 338 



Dissolved oxygen 339 



Small bottom animals 341 



Middle Peoria Lake, Mossville to Al Fresco Park (Mile 154.9—159.3) 

 below Lake Michigan: 



Hydrography 353 



Dissolved oxygen 354 



Small bottom animals 356 



Lower Peoria Lake and Illinois River, Peoria Narrows to Peoria and 

 Pekin Union Railway Bridge (Mile 161.0 — 166.4 below Lake 

 Michigan) : 



Hydrography 365 



