Contents : 



Physical Curves, By C. M. Broomall, 



The Mechanism of Diatom Motion, 



By T. Chalkley Palmer 



Concerning Potisiella erecta, . . . . 



Intellect in lyower Animals, By Sanford Omensetter, 



Indian Remains in Delaware County, - 



Minutes of the Institute, 



Minutes of Section A, 



