TITLES OF PAPERS 145 



9. SOME COySIDERATIOXS RELATING TO THE ORIGIN AND HISTORY OF THE 



LAKE SUPERIOR SYNCLINE 



BY W. O. HOTCHKISS 



Discussions same as number 6. 



10. MAGNETIC SURVEYING ON THE COPPER-BEARING ROCKS OF WISCONSIN 



BY HENRY R. ALDRICH * 



Discussions same as number 6. 



11. NATlfE COPPER DEPOSITS OF THE SOUTHERN ATLANTIC STATES AS 

 COMPARED ESPECIALLY WITH THOSE OF MICHIGAN 



BY THOMAS L. WATSON. 



Read by title. 



12. GENETIC COMPARISON OF THE MICHIGAN AND BOLIVIAN COPPER 



DEPOSITS 



BY JOSEPH T. SINGEWALD, JR. 



Eead by E. B. Mathews. 



13. SIMILARITIES AND CONTRASTS BETWEEN NATIVE COPPER DEPOSITS OF 



NEW JERSEY AND OF MICHIGAN 



BY J. VOLNEY LEWIS 



Discussions same as number 6. 



Session of Satueday, December 30 



presentation of papers 

 14. mother plants of petroleum 



BY DAVID WHITE 



15. CORRELATION OF OIL-BEARING ROCKS IN COLORADO AND WYOMING 



BY WILLIS T. LEE 



16. CAPILLARY RELATIONS OF OIL AND WATER 

 BY C. W. COOK 



Discussed bv 0. E. Meinzer. 



* Introduced by W. O. Ilotclikiss. 



X — Bull. Geol. Soc. A.m.. Vol. :;4. 11)22 



