PAGE 



Ecological Notes on Certain White Kiver Algae. Panl Weatlierwax. . . 107 



Aplianomyces PhycopliiUis De Bary. Paul Weatlierwax 103 



Inheritance of the Length of Life in Drosophila Ampelophila. Roscoe 



R. Hyde 113 



The Germination of Seeds of Arisaenia. F. L. Pickett 125 



Studies of Camptosorus Rhizophyllus, an Abstract of the Development 

 of the Prothallinm of Camptosorns Rhizoiihyllns. and the Resist- 

 ance of the Prothallia of Camptosorus Rhizophyllus to Desiccation. 



F. L. Pickett 129 



Irish Potato Scab (Oospora Scabies) as Affected by Fertilizers Con- 

 taining Su'phates and Chlorides. S. D. Conner 131 



Wabash Studies, V. Topographic Map of the Terre Haute Area. 



Chas. R. Dryer 139 



Center of Area and Center of Population of Indiana. W. A. Cogshall. . 141 



Tlie Shrinkage of Photo'^raphic Paper. R. R. Ramsey 143 



Acyl Derivatives of O-Aminophenol. J. H. Ransom and R. E. Nelson. 14.") 

 Boiling and Condensing Points of Alcohol Water Mixtures. P. N. 



Evans 151 



On the General Solutit)n and So-Called Special Solutions of Linear 



Non-homogeneous Partial Differential Equations. L. L. Steimley. 157 



A Modified Permeameter. Edwin Morrison and B. D. Morris 159 



Sanitary Survey of Indiana Rivers. Jay A. Craven, C. E 167 



The Relation of Lakes to Floods, with Special Reference to Certain 



Lakes and Streams of Indiana. Will Scott 173 



First Steps in Indiana Forestry. Stanley Coulter 189 



The Taxation of Forest Lands in Indiana. II. W. Anderson 197 



Forests and Floods. F. M. Andrews 203 



The Relation of County Tuberculosis Hospitals to Conservation of 



Public Health. James Y. Welborn, M. D 213 



Playgrounds and Recreation Centers as Factors in Conserxation of 



Human Life. Dr. W. A. Gekler 215 



Public Toilets, Public Driking Fountains and Public Spitting in rela- 

 tion to the ( 'oiisi'i-vation of Human Life. C. M. Ililliard 210 



Power EcoiKiniy in the Soutliern Indiana <}uarry Industry. <i. C. 



Mance 223 



Report of the Conunittee on ''A List of the Scientitic and Terhnical 



Serials in the Libraries of the Stati' .if Indiana" 237 



List of Scicntilii- and 'i'ccbnic.-il Serials in Uu' Libraries of Indiana. . . . 210 



