CONTENTS. 



List of Standing Committees for 1870 7 



Cross Fertilization and the Law of Sex in Euphorbia. By 



Thomas Meehan 14 



Note on the relations of Synocladia, King, 1849, to the proposed 



genus Septopora, Prout, 1858. By F. B. Meek and A. H. 



Worthen 15 



Descriptions of Fossils collected by the U. S. Geological Survey, 



under the charge of Clerence King, Esq. By F. B. Meek.. 56 



