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Local Inclusions of Prairie Within Forest, 
Arifur  G. Vestale oo re ta iii aise eee ole rn 122 
Invasion of Forest Land by Prairie Along Railroads, 
Arthur G:, Vestal ois. 222. oo. as Cpe eee 126 
Plant Succession on an Artificial Bare Area in 
Tilinois, |W. B. McDougall. .... So. eee 129 
On the Foliar Transpiring Power of Tilia, 
dW Oribbs 16!) 82). 5.0 2 seek Cee 131 
Artificial Key to the Weed Seeds Found in Com- 
mercial Seeds in Illinois and Adjoining States, 
BVA.” Gants. si... os ak. odes oo oe eee 135 
PACES OD. ZOOLOLY ... 1. bi... 6a). oo 0 oe sieves eles sen 145 
Geographical Variation of Notenigonus Crysolucas— 
An American Minnnow, Carl L. Hubbs........... 147 
The Moluseca of Piatt, Champaign and Vermilion 
Counties of Illinois, James Zetek................ 151 
Heologically Annotated List of Species Class 
Peletypoda |....... fj s 0.10. 2ie aetna e 158 
Some Bird Characteristics, W. S. Strode........... 182 
The Prothonotary Warbler, W.S. Strode........... 185 
Constitution and). By-Laws: ..... 5. . oss: eeu 187 
Pasicof Members, ) 2.0. .401400 5 oaeee eee ee 191 
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