CONTENTS 



Original Papers 



Page 



Physics. — Wave lengths of Neon. Irwin G. Priest 1 



Physical Chemistry. — The hydrolysis of sodium oxalate and its influence 



upon the test for neutrality. William Blum 1 



Evolution. — Evolution in discontinuous systems. I. Alfred J. Lotka 2 



Abstracts - 



Physics : . 7 



Physical Chemistry 7 



Mineralogical Chemistry 9 



Phytopathology 12 



Forestry! 14 



Proceedings 



Philosophical Society 17 



Botanical Society 17 



Programs and Announcements 



Philosophical Society 18 



