274 
Infinite system of forms, 80. 
In memoriam, 20. 
Integrals, reduction of, 112. 
JONES, LEE H., 257. 
KNIPP, CHAS. T., 59. 
Knobstone group, 253, 257, 258. 
Knox County, cypress of, 172. 
LABORATORY, A NEW, 65. 
Lake Maxinkuckee, 56. 
Lendi, J. Henry, 127. 
MAC DOUGAL, D.'T., 166. 
Members, |3. 
Members, active, 14. 
Members, non-resident, 14. 
Meyer, J. B., 90. 
Microcephaly, case of, 68. 
Micro-organisms, 137, 143. 
Milk, micro-organisms in, 143. 
Miller, J. A., 80. 
Moenkhaus, W.J., 207. 
Multiplication, 103. 
Mycetozoa, list of, 148. 
NATURAL GAS, 133. 
Newsom, J. F., 250, 253. 
Noyes, W. A., 132. 
OFFICERS, 1897-98, 7. 
Officers, from beginning, Y. 
Oil, photometry of, 59. 
Old river channel, 266. 
Olive, E. W., 148. 
PARAFFINS, 134. 
Paragordius, 232. 
Pear blight, 150. 
Photometry of oil, 59. 
Photo-micrographic apparatus, 78, 
President’s address, 35. 
Price, J. A., 262. 
Proceedings of 13th annual meeting, 32. 
Program of 13th annual meeting, 27. 
QUICKSAND POCKETS, 234. 
RAVEN IN INDIANA, 201. 
SALAMANDERS, LUNGLESS, 205, 206. 
Seovell, J. T., 56. 
Seeds, formalin on, 144. 
Snyder, Lillian, 150. 
Spectrum of cyanogen, 97. 
Spectrum of electric are, 95. 
Sounds, decrease of intensity, 84. 
Starches, susceptibility of, 74. 
Stone, W. E., 74. 
TABLE OF CONTENTS, 3. 
Three collinear points, 104. 
Thomas, M, B., 144. 
Time determination, 242. 
Turkey Lake, work at, 207. 
ULREY, ALBERT B., 232. 
VEATCH, ARTHUR C., 266. 
WATER, MICRO-ORGANISMS IN, 148. 
Water- power for botanical apparatus, 156. 
Whitten, W. M., 234. 
Woldt, Mae, 206. 
Worstall, R. A., 134. 
Wright, John S., 171, 172, 178. 
Wrought iron, strength of, 151. 
YEAST IN BREAD, 62. 
