26 PROCEEDINGS OF THE PHILADELPHIA MEETING 



Tlie latest facts about the Megalonyx. Scientific American, vol. 65, p. 161. 



1891. 

 Mammotli Cave, Kentncliy. Bull. Am. Geog. Soc, vol. xxiii, pp. 47-79. 1891. 

 -Vppendixes to Mammoth Cave guide book, 1.3th edition. Appendix A, on sub- 

 terranean fauna and flora. iVppendix I?, on Ganter Avenue. 1891. 

 A visit to Chalcedony Park, Arizona. Scientific American, vol. 67, p. 5,5. 1892. 

 On the rim and in the depths of the Grand Canyon. Scientific American, vol. 



67, pp. 87-89. 1892. 

 Kansas salt. Scientific American, vol. 66, p. 289. 1892. 

 The Grand Canyon of the Colorado. Scientific American, vol. 66, pp. .392-39.3. 



1892. 

 A remarkable instance of recent erosion. Scientific American, vol. 68, p. 152. 



1893. 

 The Isles of Slioals (New Hampshire). Scientific American Suppl., No. 1035, 



pp. 16547-16548. 1895. 

 The making of Mammoth Cave. Scientific American, vol. 75, p. 351. 1896. 

 The colossal cavern of Kentucky. Scientific American, vol. 75, p. 183. 1896. 

 Geological notes on the Isles of Shoals (abstract). Proc. Am. Assoc. Adv. Sci., 



vol. xliv, pp. 136-137. 1896. 

 Mammoth Cave, its environs and contents. Jour. School of Geography, vol. i, 



pp. 133-139. May, 1897. 

 Our saltpeter caves in time of war. Scientific American, vol. Ixxvi, p. 291. 



1897. 

 Mammoth Cave of Kentucky. (H. C. Hovey and R. Ellsworth Call.) John P. 



Morton »& Company, Louisville, Kentucky. 112 pages. 1897. 

 The Aven Armand, Lozere, France. Scientific American, vol. 78, pp. 228-229. 



1898. 

 The life and work of James Hall, Lli. D. Am. Geol., vol. xxiii, pp. 137-168. 



1899. 

 Mapping the Mammoth Cave. Scientific American Suppl., No. 1229. June 22, 



1899. 

 Facts about Megalonyx. Scientific American Suppl., No. 1300, p. 20839. 1900. 

 The lead and silver mines of Newbury. Scientific American Suppl., No. 1328, 



p. 21284. 1901. 

 Balloon measurements of Mammoth Cave's height. Scientific American, vol. 



89, p. 147. 1903. 

 The colossal cavern of Kentucky. Scientific American Suppl., No. 1455. No- 

 vember 21, 1003. 

 Colossal cavern. Spelunca, t. v, pp. 57-01. 1904. 

 Strange mazes and chasms in Mammoth Cave, with diagram of the Mtelstrom 



and photograph of John M. Nelson, the guide. Scientific American Suppl., 



No. 1540, p. 24680. 1905. 

 A Mammoth Cave cathedral; some new discoveries of interest. Scientific 



American Suppl., No. 1651, p. 125. 1907. 

 Recent explorations in Mammoth Cave, with a revised map of the cave (ab- 

 stract). Science, n. s., vol. xxviii, p. 381. September 18, 1908. 

 Hovey's hand-book of the Mammoth Cave. John P. Morton & Company, Ijouis- 



ville, Kentucky. 64 pages. 1909. 

 Mammoth Cave Baedeker's United States, p. .581. 1!)09. 



