INDEX TO VOLUME VII. 



Arboretum, Painters', Notes on, By H. S. Conard, Page 19 



Archives of Delaware County. I. Burial Records 

 of the Providence Friends' Burying Grounds, 

 Providence Road, Media, Pa. Compiled by 

 Edward \\ and Margaret S. Streeper, - "73 



Bacillus prodigiosus , By C. M. Broomall, - - "9 



Educational Failure, The, and its Meaning, - " i 



By Albert W. Barker 



Institute Notes, • - - - - Pages 46, 97 



Museum Catalogue, Delaware County Institute of 



Science. Section : Reptiles, Batrachians, Etc. Page 13 



Solar Halo of May 20, 191 5, By Merwyn R. Lewis, " 49 



Typhoid Epidemic, Report on a, - - - " 67 



By David Wilbur Horn, Ph.D. 



\'ertebrates. Cold-blooded, of Delaware County, 



Pennsylvania, An Annotated List of, - " 33 



Bv Henrv \V. Fowler 



