230 



Pagp 

 Gas, the Determination of Hydrogen, Nitrogen and Methane by the 



Combustion of in a Quartz Tube 215 



Heronry near Indianapolis, by Amos Butler 57 



Improvements of Medicinal Plants, by F. A. Miller 115 



Indiana Fungi — III, by J. M. Van Hook 99 



Influence of Certain Euvironic Factors ou the Development of Fern 



Prothalia, by D. M. Mottier 85 



Length of Dife of Arisrema Triphylluni Cornis, by F. L. Pickett 77 



Members of the Indiana Academy of Science 14 



Minutes of the Twenty-eighth Annual Meeting 33 



Mosses of Monroe County, by F. L. Pickett and Mildred Nothnagel 69 



Nascent State of the Elements, by Ransom and Stevens 139 



Natural Bridge in Parke County, by Chas. R. Dryer 212 



New Method for the Preparation of Salts of Selenic Acid, by Mathers 



and Frank 221 



New Method for the Qualitative Detection of Chlorides in the Presence 



of Bromides and Iodides, by Mathers and Lee 225 



Notes on the Intersection of Osculating Pianos to the Twisted Cubic 



Curve, by A. M. Kenyon 189 



Notes on the Seedless Fruits of the Common Persimmon, by D. M. 



Mottier H7 



Notes on Some Puff-Bails of Indiana, by F. D. Kern 105 



Notes on the System of Crystallization and the Proper Cutting of the 



Synthetic Corundum Gems, by Frank R. Wade 1G9 



Officers for 1912-1913 II 



On the Atomic Structure of Energy, by A. E. Caswell 157 



On the Linear Difference Equations of the First Order with Rational 



Coefiicients, by Thos. E. Mason ISl 



Penetration of Wood by Zinc Chldridc, by E. G. Mahin 149 



Persimmon. Notes on the Seedless limits of 67 



Photosynthesis, an Experiment in 93 



Photosynthesis in Submerged Land Plants, by Harry V. lleiuiburger. . . 95 

 Planes, Notes on the Intersection of Osculating Planes tf> the Twist(>(l 



Cubic Curve 189 



Plants, Improvement of Medicinal 115 



Plants Not Hitherto Reported from Indiana, by ('has. C. Deain 81 



