REPORT ON THE GEOLOGY OF ESSEX CO., MASS. 137 



Vol. iv, p. 55. Ship Rock, etc. S. Barden. 



Vol.iv,p. 61. Devil'sDen. 



S. Barden and H. C. Perkins. 

 Vol. iv, p. 152. Mineral Point Mine, Georgetown. 



Vol. iv, p. 163. Sand in Newburyport. 



Henry C. Perkins. 

 Vol. iv, p. 3. On the Sodalite at Salem. 



David M. Balch. 

 Vol. iv, p. 6. On Magnetite and an unknown 



Mineral at Nahant. 



G. H. Emerson. 

 Vol. v, p. 157. Geology of Andover. 



C. H. Hitchcock. 

 Vol. vi, p. 43. Geology of Marblehead. 



J. J. H. Gregory. 

 Vol. vi, p. 47. Copper Mines of Topsfield. 



Vol. vi, p. 51-52. Geology of Salem. 



Prof. A. Hyatt and S. Todd. 



Bulletin of the Essex Institute. 



Vol. i, p. 59. Notice of a singular Erratic in Lynn 

 known by the name of Phaeton 

 Rock. C. M. Tracy. 



Vol. i, p. 106. Geological Description of New Eng- 

 land Granite formation. 



T. SterryHunt. 



Vol. i,p. 144. Eozoön Canadense. E. Bicknell. 



Vol. ii, p. 93. Eozoön in Essex County. A. Hyatt. 



Vol. ii, p. 111. Geology of Marblehead Neck. 



A. Hyatt. 



Vol. iii, p. 49. On the Geological Survey of Essex 



Co. A. Hyatt. 



Vol. iii, p. 53. Notes on the Geology of Eastern 

 Mass. T. Sterry Hunt. 



ESSEX INST. BULLETIN, VOL. XXVI. 18 



