4 ^H^ 



PROCEEDINGS 



American Philosophical Society 



HELD A^ PHILADELPHIA 



FOR PROMOTING USEFUL KNOWLEDGE 



Vol. XLIX. August-September, 1910. No. 196. 



CONTENTS. 



The Effects of Temperature on Phosphorescence and Fluorescence. By 



Edward L. Nichols 267 



Germinal Analysis through Hybridization. By George Harrison Shuli... 281 



The New Views about Reversion. By C. B. Davenport 291 



Further Notes on Burial Customs, Australia. By R. H. Mathews, L.S 297 



Some Relations between Substitution Group Properties and Abstract Groups. 



by G. A. Miller 307 



Serpentines of the Central Coast Ranges of California. By H. E. Kramm.. 315 

 Obituary Notices of Members Deceased 



Oliver Wolcott Gibbs xix 



PHILADELPHIA 

 THE AMERICAN PHILOSOPHICAL SOCIETY 



104 South Fifth Street 

 1910 



