150 A CENTUEY OF SCIENCE 



K.ain, J. H., Remarks on the mineralogy and geology of northwestern 

 Virginia and eastern Tennessee, this Journal, 1, 60-67, 1819. 



5 Hitchcock, Edward, Geology, etc., of regions contiguous to the Connect- 

 icut, this Journal, 7, 1-30, 1824. 



Buckland, Wm., Reliquiae diluvianae, this Journal, 8, 150, 317, 1824. 



7 Phillips, John, Geology of Yorkshire, this Journal, 21, 17-20, 1832. 

 8 Scrope, G. P., Excavation of valleys, Geol. Soc., London, No. 14, 1830. 



8 Hayes, G. E., Remarks on geology and topography of western New 

 York, this Journal, 35, 88-91, 1839. 



10 Seventh Meeting of the British Association for the Advancement of 

 Science, this Journal, 33, 288, 1838. 



11 Darwin, Charles, Geological observations on the volcanic islands and 

 parts of South America, etc., second part of the Voyage of the "Beagle, " 

 during 1832-1836. London, 1844. 



12 Hildreth, S. P., Observations, etc., valley of the Ohio, this Journal, 29, 

 1-148, 1836. 



" Geddes, James, Observations on the geological features of the south 

 side of Ontario valley, this Journal, 11, 213-218, 1826. 



"Conrad, T. A., Notes on American geology, this Journal, 35, 237-251, 

 1839. 



15 Warren, G. K., Preliminary report of explorations in Nebraska and 

 Dakota, this Journal, 27, 380, 1859. 



18 Lesley, J. P., Observations on the Appalachian region of southern 

 Virginia, this Journal, 34=, review, 413-415, 1862. 



17 Hitchcock, Edward, First anniversary address before the Association 

 of American Geologists, this Journal, 41, 232-275, 1841. 



18 Dana, J. D., On denudation in the Pacific, this Journal, 9, 48-62, 1850. 

 , On the degradation of the rocks of New South Wales and 



formation of valleys, this Journal, 9, 289-294, 1850. 



l * Hubbard, O. P., On the condition of trap dikes in New Hampshire an 

 evidence and measure of erosion, this Journal, 9, 158-171, 1850. 



* Hayden, F. V., Some remarks in regard to the period of elevation of 

 the Rocky Mountains, this Journal, 33, 305-313, 1862. 



21 Newberry, J. S., Colorado River of the West, this Journal, 33, review, 

 387-403, 1862. 



22 Jukes, J. B., Address to the Geological Section of the British Associa- 

 tion at Cambridge, Quart. Jour. Geol. Soc., 18, 1862, this Journal, 34, 439, 

 1862. 



28 Powell, J. W., Exploration of the Colorado River of the West, 1875. 

 For Powell's preliminary article see this Journal, 5, 456-465, 1873. 



**McGee, W. J., Three formations of the Middle Atlantic slope, this 

 Journal, 35, 120, 328, 367, 448, 1888. 



25 Davis, W. M., Topographic development of the Triassic formation of 

 the Connecticut Valley, this Journal, 37, 423-434, 1889. 



26 Percival, J. G., Geology of Connecticut, 1842. 



27 Kerr, W. C., Origin of some new points in the topography of North 

 Carolina, this Journal. 21, 216-219, 1881. 



^McGee, W. J., The classification of geographic forms by genesis, Nat. 

 Geogr. Mag., 1, 27-36, 1888. 



28 Davis, W. M., The rivers and valleys of Pennsylvania, Nat. Geogr. 

 Mag., 1, 183-253, 1889. 



, The rivers of northern New Jersey with notes on the classi- 

 fication of rivers in general, ibid., 2, 81-110, 1890. 



^Silliman, Benjamin, Notice of Horace H. Hayden 's geological essays, 

 this Journal, 3, 49, 1821. 



31 Cornelius, Elias, Account of a singular position of a granite rock, this 

 Journal, 2, 200-201, 1820. 



