kl 



\Kr.^<T- PROCEEDINGS 



OF THE 



AMERICAN PHILOSOPHICAL SOCIETY 



HELD AT PHILADELPHIA 

 FOR PROMOTING USEFUL KNOWLEDGE 



Vol. XLIIL January— March, 1904. No. 175. 



CONTENTS. 



PAGB 



Stated Meeting, January 1 '3 



Stated Meeting, January 15 4 



The Main Facts in Regard to the Cellular Basis of Heredity. By 



Thomas H. Montgomery, Jr 5 



The Miocene Diabase of the Santa Cruz Mountains in San Mateo 



County, California. By H. L. Haehl and Ralph Arnold.. 15 



Stated Meeting, February 5 14 



Stated Meeting, February 19 53 



Stated Meeting, March 4 54 



The Native Tribes of Victoria : Their Languages and Customs. By 



R. H. Mathews, L.S 54 



The Mississippi River Problem. By Lewis M. Haupt 71 



Stated Meeting, March 18 96 



^ philadelphia i 

 The American Philosophical Society, 

 104 South Fifth Street. 

 1904. 



