INDEX TO VOLUME VI. 



Diatoms, Further Notes on, By T. Chalkley Palmer, Page 154 



Diatom, Navicula socialis, By T. Chalkley Palmer, " 115 



Flood, The, of 1843, ----- Pages i, 54 



Insects, Speech of. By Sanford Omensetter, - Page 121 



Institute Minutes, . . . Pages 47, 88, 137, 169 



Institute Notes, ----- Pages 92, 140 



Maize, An Unusual Form of, - - - - Page 49 

 By Dr. J. W. Harshberger 



Museum Catalogue, American Anthropology, 



Navicula socialis, Concerning, By T. Chalkley Palmer, 



Parasitic Adaptation, By B. M. Underhill, V. M. D., 



^otts, Charles, Minute on Death of, - 



Section A, Field Day, ----- 



Section A, Minutes - - - Pages 48, 91, 139, 171 



Transition Curve, The, By C. M. Broomall, - Page 141 



Water Supplies, Municipal, By C. M. Broomall, " 104 



