55 



Palaeography of the North American Continent. (1872), A. G. Soc., 



J., iv, pp. 416-431. 

 On the Theory of Volcanos. (1872), Boston Soc. Nat. His. Proc., xv, 



pp. 250- 'J 

 On the Crystalline Schists ot the Green and White Mountain Series. 



Boston So,-. Nat. Hi>. Proc.. \v, pp. Ml). 310. 

 On the Eozoon Canadense. (1870), Irish Acad. Proc., i, 1873-74, pp. 



123-127. 



On Concentric Lamination in Rocks. Boston Soc. Nat. His. Proc., xv, 

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1874. 



On the Crystalline Rocks of the Blue Ridge Southwest of Lynchburg, 

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Geology of tin- North Shore of Lake Superior. I. M. E. f ii, p. 58. 



The Ore Knob Copper Mine and Some Related Deposits. I. M. E., ii, 

 PP. 123-131. 



Remarks on Position of Magnetic Iron Ores of Northern Ne\v York. 

 I. M. E., i, 370. 



On the Cement of Some Natural and Artificial Stones. P. A. A., xxiii, 

 pp. 106, 107. 



The Disintegration of Rocks and Its Geological Signitieanee (ab- 

 stract). P. A. A., xxiii, pp. 396. 



The Sewage Question Chemically Considered (abstract). P. A. A., 

 xxii, pp. 107-109. 



on Wet Processes of Copper Extraction (abstract). P. A. A., xxii, pp. 

 78(b), 79. 



On the Decayed Rocks of the Hoosac Mountains. I. M. K., iii. pp. 

 187, 188. 



The Coals of the Hocking Valley, Ohio. I. M. K.. ii. p. 273. 



Magnetic Iron Ores of New Jersey. I. M. K., ii. pp. 234. 



Occurrences of Glauconite and Fossil Resins. Boston Soc. Nat. II i<. 

 Proc., xvi, pp. :*oi 



Remark- o n tin- Stratification of |{ock Masses. Boston Soc. Nat. Hi-, 

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Tl.. I>ep,,Hti..n ofdays. B Nat UN. Proc., \vi. pp. W2-804. 



On Dr. drnth's Researches on Corundum and 1 1 - A--<>< iated Mim-raK. 

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Breaks In the American Paleocofc 3 r \ \ \\ii. pp. 117. 



1875. 



i:il ('liemi.-tr\ . \. Popular Srimee Monthly. 



L J. 8., i\. pp <ii. r,. P.o-ton Boc Nat. Mi-. 

 p 



1C Tiinm-1. II \o. '.' 



md . i Essays, i 



