Constitution, 8. ; 



Conularia, 100. 



Corethra, 127, 128. 



Coryxa, 128. 



Coulter, J. M., 11, 12, 19, 20, 21, 24, 



28, 107, 144, 157. 

 Cowles, H. C, 14, 22, 27, 132. 

 Cremastogaster lineolata, 138. 

 " lutescens, 138. 



" victima, 138. 



Crew, Henry, 21, 41. 

 Crook, A. R., 11, 21, 27, 151. 

 Culex, 128. 

 Cyclops, 127. 

 Cyclora alta, 100. 

 Cyphaspis intermedia, 98, 99. 

 Dalmanella elegantula, 98-102. 

 Dawsonoceras tenuilineatum, 98, 



99. 

 Demonstration of Movement of 



Water in Leaves, 21, 145. 

 Demonstration of Use of Oxygen 



in Mine Rescue Work, 20. 

 Desmopachria convexa, 127. 

 Diaptomus, 127. 

 Dineutes hornii, 127. 

 Dioon edule, 144. 



" spinulosum, 144. 

 Dolichoderus plagiatus, 141. 

 Donacia, 127. 

 Dorymyrmex niger, 141. 

 Dytiscus, 129. 

 Eastward Extension of Sweetland 



Creek Shale, 20, 103. 

 Ecological papers, 117. 

 Ecological Studies of Prairie and 



Forest in Illinois, 27, 133. 

 Ephemeridae, 129. 

 Erpobdella punctata, 127. 

 Estheria, 106. 



Eucrangonyx gracilis, 127, 129. 

 Evaporation and Plant Succes- 

 sion, 28, 119. 

 Fagus grandifolia, 122. 

 Farrington, O. C, 20. 

 Favosites niagarensis, 100. 

 Ferry, J. F., 159. 

 Forbes, S. A., 26, 27, 158. 

 Formica argentata, 140. 

 " cinerea, 140. 



Formica exsectoides, 140. 



" fuscata, 141. 

 incerta, 140. 



" melanotica, 140. 

 neocinerea, 140. 



" nitidiventris, 140. 



" obscuripes, 140. 



" obscuriventris, 140. 



" perpilosa, 141. 



" picea, 140. 



" rubicunda, 140. 

 rufa, 140. 



" sanguinea, 140. 



" schaufussi, 140. 



" subaenescens, 141. 



" subintegra, 140. 



" subpolita, 140. 



" subsericea, 140. 

 ulkei, 140. 

 Frost, E. B., 21, 50. 

 Fuller, G. D., 26, 28, 119. 

 Galba caperata, 112. 



" reflexa, 110, 112. 

 Gault, B. T., 159. 

 Geological papers, 83. 

 Gerris marginatus, 128. 

 Gleason, H. A., 26. 

 Gloeotaenium, 143. 

 Gloeocystis, 143. 

 Glossiphonia heteroclita, 127. 

 Glyphidula, 100. 

 Goniobasis livescens, 100-112. 

 Graphoderes, 127. 

 Gypidula simplex, 98. 

 Hall, R. C, 26. 



Halysites catenulatus, 100, 101. 

 Handbook for Students of Animal 



Ecology, 27, 133. 

 Hankinson, T. L., 25. 

 Hessler, J. C, 14, 27, 132. 

 Holopea illinoisensis, 98. 

 Homeospira channahonensis, 98. 

 Hopkins, C. G., 22, 24. 

 Hybius, 127. 

 Hydrochinidae, 128, 129. 

 Hydrometri martini, 128. 

 Hydrophyllidae, 129. 

 Hydroporus modestus, 127. 

 lUaenus daytonensis, 100. 

 Iridomyrmex analis, 139. 



