XIV LIST OF ILLUSTRATIONS. 



Page. 



29. Portrait of Charles Upham Shepard. From a lithograph hy Engelbach . . 340 



30. Portrait of James Curtis Booth. From a photograph taken in 1876 340 



31. Portrait of Bela Hubbard. From an engraving in Magazine of Western 



History 360 



32. General section across the Western States. (After D. D. Owen.) From 



Quarterly Journal of the Geological Society of London, 1846 369 



33. Portrait of James Hall. From a daguerreotype taken in 1843 381 



34. Profile of the Island of New York. (After Issachar Cozzens. ) From Geo- 



logical History of Manhattan Island, 1843, (Original colored) 385 



35. Portrait of Michael Tuomey. From a photograph taken about 1857 387 



36. Portrait of Charles Baker Adams. From an enlarged engraving in Amer- 



ican ( ieologist, XXXII, 1903 391 



37. Ideal section of the crust of the earth. (After C. B. Adams.) From First 



Annual Report (ieologist of Vermont, 1845 392 



38. Portrait of Zadock Thompson. From a steel engraving by J. C. Buttre.. 393 



39. Richmond bowlder train. (After E. Hitchcock.) From American Jour- 



nal of Science, XXXIX, 1845 394 



40. Portrait of Frederick Adolphus Wislizenus. From a photograph 398 



41. Portrait of James Dwight Dana. From a lithograph by R. Hoffman, 1857. 401 



42. Sketch map of Richmond bowlder train. (After E. R. Benton.) From 



Bulletin of Museum of Comparative Zoology, V, 1878 403 



43. Portrait of John Bulkley Perry. From an engraving by H. W. Smith 405 



44. Map showing Stansbury's routes in 1849-50 410 



45. Map of areas surveyed by I). D. Owen in Iowa, Wisconsin, and Illinois in 



1839, and the Chippewa land district in 1847 411 



46. Owen's geological sections across Iowa, Wisconsin, and Illinois. From 



Report of Geological Exploration of Part of Iowa, Wisconsin, and Illi- 

 nois, 1839, pi. i 411' 



47. Trap dikes on Lake Superior. (After D. D. Owen. ) From Report of Geo- 



logical Survey of Wisconsin, Iowa, and Minnesota, 1852 414 



48. Map sh< iwing area surveyed by Jackson, and Foster and Whitney, 1 847-40 . .415 



49. Portrait of Louis Agassiz. From a steel engraving by C. H. Jeens in 



Nature, April, 1870 417 



50. Portrait of John Wells Foster. From a steel engraving 417 



51. Portrait of Philip Thomas Tyson. From a painting, by permission of 



Maryland geological survey 428 



52. Portrait of Joseph Granville Norwood, aged 67 years. From a photo- 



graph 433 



53. Map showing routes of Marcy and Shumard, 1849-52 434 



54. Portrait of Oliver Payson Hubbard. From a photograph 435 



55. Portrait of John Boardman Trask. From a photograph 436 



56. Portrait of Garland Carr Broadhead. Fr< >m a photograph 438 



57. Portrait of Oscar Montgomery Lieber. From a photograph 444 



58. Portrait of Jules Mam >u. From a photograph 448 



59. Map showing principal routes of exploring parties in connection with 



Pacific railroad surveys 450 



60. Portrait of William Phipps Blake. From a photograph 452 



61. Portrait of Thomas Antisell. From a photograph 454 



62. Portrait < if George Gibbs. From a photograph 456 



63. Portrait of James Merrill Safford. From a photograph 456 



04. Section from the Cumberland to eastern base of Lookout Mountain. 



( After J. M. Safford. ) From a Geological Reconnaissance of Tennessee, 



1855 457 



65. Paradoxides harlani. From a photograph of one of Green's casts 404 



66. Portrait of Richard Owen. From a wood engraving in Popular Science 



Monthly, LI, 1897 475 



67. Map showing routes traversed by Newberry with Lieutenant Ives and 



Captain Macomb, 1857-59 .* ' - 479 



