REPORT ON THE GEOLOGY OF ESSEX CO., MASS. 135 



Vol. xvii, p. 462. Chemical Composition of some 



Minerals from Newburyport. 



Miss Ellen H. Swallow. 

 Vol. xviii, p. 220. Remarks on the Porphyries of 



Marblehead. Prof. A. Hyatt. 

 Vol. xix, p. 251. On the so-called Tremolite of New- 

 buryport, Mass. 



Dr. M. E. Wadsworth. 

 Vol. xx, p. 210. The Kames and Moraines of New 



England. Geo. F. Wright. 



Vol. xxi, p. 288. On the Trachyte of Marblehead 



Neck, Mass. 



Dr. M. E. Wadsworth. 

 Vol. xliii, p. 141. The Central Mass. Moraine. 



Ralph S. Tarr. 



Occasional Papers in (B. S.N.H. ) Report on the Geology 



of Mass. with Geological Map of Boston and vicinity, 



1877-1880. Prof. W. O. Crosby. 



Journal of the Essex County Watural History Society. 



Vol. i, p. 78. A sketch of the Geology and Mineral- 

 ogy of the Southern part of Essex 

 County. William Prescott. 



Vol. i, p. 120. The Danvers Boulder on Ship Rock. 



Proceedings ofthe Essex Institute. 



Vol. i, p. 19. Sienite of South Dan vers. 



A. Nichols. 

 Vol. i, p. 151-153. Cancrinite, Pyrite and Zircon in 



Salem. 

 A. P. Chuteand G. L. Streeter. 

 Vol. ii, p. 39. Geology of Manchester. 



B. F. Mudge. 



