INDEX TO VOLUME IV. 



Court House Lawn, Media, Trees and Shrubs, Page 155 



Ctenophora, Longport, N. J., By Graceanua Lewis, " 103 

 Delaware County Plants, Additions to Dr. Fussell's 



List, By Francis W. Pennell, - - "68 

 Delaware River Water, Bacteriological Examination, 



Howard W. Fields and Percy E. Mebus, " 138 



Diatom, The Sluggish, By T. Chalkley Palmer, - " 131 



Elastic Bodies, Thermodynamics of, C. M. Broomall, " 160 



Fishes, Remarkable, By Graceanna Lewis, - " 75 



Florence, By Jacob B. Brown, - - - - "45 



Flower Pigments, By C. M. Broomall, - - " 81 



Frogs, Delaware County, A Familiar Talk on, 



By T. Chalkley Palmer, " 12 



Horse, The Mentality of, B. M. Underbill, V. M. D., " 11 1 



Institute Xotes, - - - . Pages 42, 87, 128, 172 



Latin Pronunciation, By Henr>- L. Broomall, - Page 63 



Light, Polarized, Natural Sources of, C. M. Broomall, " 119 



Linguistics, Vocal Imitation of Motion and Mass, 



By Henr}- L. Broomall, " 89 



Longport, N. J., in September, Graceanna Lewis, " 103 



Mineralogy-, A Half Hour's Talk, Joseph Willcox, " i 

 Minutes, Institute, - - - Pages 40, 85, 122, 165 

 Minutes, Section A, - - - - Pages 126, 167 

 Plants, Delaware County, Additions to Dr. Fussell's 



List, B3' Francis \V. Pennell, - - Page 68 



Rabies, By John Reichel, V. M. D., - - - " 141 

 Verb, English, Phonetic Characteristics, 



By Henn,- L. Broomall, " 23 

 Voclal Imitation of Motion and Mass. 



By Henry L. Broomall, " 89 



