REPORT ON THE GEOLOGY OF ESSEX CO., MASS. 139 



Geological Magazine. 



3d Series ii, 207-210. Syenite and Gabbro in Massa- 

 chusetts. 



Dr. M. E. Wadsworth. 



Department ofthe Interior U. S. Geological 

 Survey, 9th Annual Report. 



The Greology of Cape Ann, Mass. 



Prof. N. S. Shaler. 



In this bibliography there are probably some omissions 

 and the author will esteem it a great f avor if his attention 

 is called to titles of papers not here included. 



John H. Sears. 

 Peabody Academy of Science. 

 Salem, Sept., 1894. 



