100 
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Geinitz, H. B. Nachtragliche Mittheilungen uber die rothen 
und bunten Mergel der oberen Dyas bei Manchester. 
Ibid. 1890, Abh. V, pp. 1-6. 
Geinitz, H. B. and Marck, W. v.d. Geologie von Sumatra. 
Mittheilungen aus den Koniglichen Mineralogischen 
Museum in Dresden, Heft 2, pp. 1-16. 
Geology Society of London. List of Members, 1884,' 1891, 
14a. 
'Gilbert, G. K. The Moon’s Face. Bulletin Philosophical 
Society of Washington, vol XII, pp. 241-292, pi. 3. 
--The Colorado Plateau Region considered as a Field for 
Geological Study, Amer. Journ. of Sci., 1875, July and 
August, pp. 1-27. 
--The Strength of the Earth’s Crust. Bull. Geol. Soc. 
Am., vol. I, 1888, pp. 23-27. 
-- The History of the Niagara River. From 6th Annual Re¬ 
port of the Commissioners of the State Reservation at 
Niagara for 1889. 
— — The Sufficiency of Terrestrial Rotation for the Deflection 
of Streams. National Academy of Sciences, vol. Ill, pp. 
1 - 6 . 
Grant, U. S. The Stratigraphic Position of the Ogishke Con¬ 
glomerate of Northeastern Minnesota, Amer. Geologist, 
vol. X, July, 1892, pp. 1-10. 
-Report of Geological Observations made in Northwestern 
Minnesota durning the summer of 1888. Part IV of the 
Seventeenth Annual Report of Minn. Geol. Survey, St, 
Paul, Minn., 1889. 
-Account of a Deserted Gorge of the Mississippi near 
Minnehaha Falls. Amer.' Geologist,-July, 1890, pp. 1-6, 
-Note on Quartz-Bearing Gabbro in Maryland. Johns Hop¬ 
kins University Circulars, No. 103. 
