226 



OFFICERS, 1900-lWl, 9. 

 OflSeers, since organization. 11. 

 Ordovioian rock.^ of southern Indiana, 200. 

 Orthothetes minutu.s, n. sj).. 216. 



PASTEUR FILTER, divice for support- 

 ing. 157. 



Phasemeter. Rayleigh's alter, current, 110. 



Photomierograi)hy as it may be practiced 

 to-day, 'ii. 



Physical geography, "aids in teaching, 194. 



Poinsett Lake bottoms, etc., 171'. 



Powders, vegetable, 120. 



President's address, 34. 



Price,.!. A., 179,181. 



Prime numbers, decomposition of, 105. 



Program sixteenth annual meeting, 28. 



Protoplasm, movements of, in hyphae of 

 mould, L57. 



RAMSEY, EARL E., 218. 



Ransom,.!. H., 116. 



Rayleigh's alternate current phasemeter. 



110. 

 Report sixteenth annual meeting, .33. 

 Rettger, L. .!.,167. 

 River bends and bluffs, 197. 



SALAMAXDER, a Kankakee, 165. 



Salamander, new cave species of, 167. 



Scovell,.!.T.,124. 



Shaaf, Albert, 179, 181. 



Shell gorget, a, 81. 



Slonaker, J.R.,167. 



Smart, R. A., 100. 



Smut, experiments with, 123. 



Southern Indiana, ordovieian rocks of, 2(X). 

 Spy Run and Poinsett Lake bottoms, 179. 

 Spy Run Creek, abamloned meanders of, 181. 

 SMueteiipnc, on the life history of the, 166. 

 Stuart, Wm.. 148. 153. 

 Staining of vegetable powders. 120. 

 Supporting Pasteur filter, device for, 157. 

 Sym median point, properties of, 85. 



TEMPERATURE REGULATOR, automa- 

 tic, 90. 

 Tennessee, mid-summer plants of south- 

 eastern, 143. 

 Theory of numbers, a theorem in, 103. 

 Thomas, M.B., 121, 123. 

 Toad, on the daily habits of the, 167. 

 Tomatoes, bacterial disease of, 153. 



VAPOR DENSITIES, note on, 95. 

 Vegetable powders, examination of, 120. 

 Vegetable powders, staining of, 120. 

 Vertebrates of Winona Lake, cold-blooded, 

 21S. 



WABASH DRAINAGE SYSTEM, etc., 184. 

 AValdo.C. A.. 91. 



Wehnelt interrupter, an improved, 97. 

 Wells and AVhitley counties, mycological 



notes from. 161. 

 Western Indiana bowlder belts, 192. 

 AVestlund..!acob, 103,105. 

 Williamson, E.B., 161. 173. 

 Winona Lake and vicinity, cold-blooded 



vertebrates of, 218. 

 Woods, microscopic structure of, 1-57. 

 Wright, J. S., 120. 



