230 



Pagf 

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



Combustion of in a Quartz Tube 215 



Heroni-y 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 Euvirouie Factors on the I)evoloi>ment of Fern 



Prothalia, by D. M. Mottier 85 



Length of Life of Arls;ienia Triphylluni Corms, 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 Planes to the Twisted Cubic 



Curve, by A. M. Kenyon 189 



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



Mottier ()7 



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 B. Wade U)9 



Officers for 1912-1913 11 



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



On the Linear Difference Equations of the First Order with Rational 



Coefficients, by Thos. E. Mason 181 



Penetration of Wood by Zinc (Ililoride, by E. G. Maliin 149 



Persimmon, Notes on the Seedless Fruits of (>7 



Photosynthesis, an ExjieriuKMit in 93 



Photosynthesis in Submerged Laud I'lants, by Harry V. lleimburger. . . 95 

 Planes, Notes on the Intersection of Osculating IManes to the Twisted 



Cubic Curve 189 



Plants, Improvement of Medicinal 115 



Plants Not Hitherto Reported from Iiuli.iiia. by Chas. C. Deani 81 



