INDEX 621 



Vol. Page 

 Bakke, A. L., The Late Blight of Barley (Helmintliospor- 



ium teres Sacc) XIX, 93 



The Effect of Smoke and Gases upon Vegetation XX, 169 



See Corson and Bakke. 

 Balance, Effect of Temperature Inequalities on, L. D. 



Weld XVI, 181 



Baldwin, Francis Marsh, Pharyngeal Derivatives of Am- 



blystoma XXV, 111 



Ball, Elmer D., A Study of the Genus Clastoptera Ill, 182 



Notes on the Orthopterous Fauna of Iowa. IV, 234 



A Review of the Cercopidae of North America North 



of Mexico VI, 204 



Notes on the Acocephalina (Homoptera-Jassidas) .... VII, 64 

 A Review of the Tettigonidese of North America North 



■ of Mexico VIII, 35 



Snakes Swallowing Their Young XXII, 343 



See Osborn and Ball. 

 Ball, Carlton R., An Anatomical Study of the Leaves of 



Eragrostis , IV, 138 



The Genus Salix in Iowa VII, 141 



Bancroft, Ross L., and Firkins, B. J., A Study of Certain 

 Green Manure Crops in Making Rock Phosphate 



Available in Soils XXV, 477 



Bates, Clinton O., Analysis of Water for Railway Engines I, III, 27 



Pure Food Laws VIII, 206 



Analyses of Certain Clays Used for Making Paving 



Brick for Cedar Rapids IX, 61 



Municipal Hygiene, Part I, XII, 75; Part II, Milk, XIII, 17 

 Presidential Address, 1907, Influence of Modern 



Science in the Formation of Ideals XIV, 7 



Barbituric Acid, See Furfural. 



Barite in Iowa, Illinois and Wisconsin, W. D. Shipton... XXII, 237 



Barium in Tobacco, N. Knight XXIII, 26 



Barley, Late Blight of (Helminthosiiorium teres Sacc), A. 



L. Bakke XIX, 93 



Barr, W. M., The Action of Sodium Thiosulphate Solutions 



on Certain Silver Salts XI, 183 



Barris, Willis Henry, Charter Member, L. H. Pammel.. XIX, 37 

 Bartholomew, C. E., A Study in Wing Veination, Family 



Aphididffi XV, 173 



Barus, See Nucleations. 



Basidiomycetas of Central Iowa, A. W. Hess and H. Van- 

 divert VII, 183 



Battery, Googler Primary, H. R. Woodrow XVI, 167 



Beach, Alice M., Additions to the Known Species of Iowa 



Ichneumonidse I, IV, 128 



Some Bred Parasitic Hymenoptera in the Iowa Agri- 

 cultural College Collection II, 92 



