14 



THE GEOLOGIST. 



Mr. William Wilsou, who observed impressions upon them, which he 

 regarded as those of the " turkey tribe." They (Tridentijpes ele- 

 gans) were observed by the late Dr. James Deane, who sent casts 

 of them to Professor Hitchcock, secured them for his cabinet and 

 gave it as his opinion, from their form and succession, that they were 

 made by birds. After visiting all the quarries, and discovering other 

 and larger specimens, Professor Hitchcock gave a scientific descrip- 

 tion of seven species in 1838 in the * American Journal of Science.' 

 With a few eminent exceptions — Silliman, Buckland, Rogers, Em- 

 mons, etc. — his views were not adopted by scientific men. He con- 

 tinued, however, to explore, and from time to time to describe new 

 species until, within six years, during which he laboured almost alone, 

 the number of species amounted to thirty-two ; and a general acqui- 

 escence was secured for the views he had advanced. The following 

 bibliography will show by whom, when, and where the tracks — birds' 

 and other tracks — have been described up to 1858.* 



BIBLIOGRAPHY OF CONNECTICUT FOOTPRINTS. 



Orniihienoloyy ; or, Description of the Footmarks of Birds (Ornithicnites) 

 on New Bed Sandstone in Massachusetts. By Professor Edward 

 Hitchcock. In 'American Journal of Science,' vol. xxix. p. 307. 

 January, 1836. 34 pa^es and 3 plates. 



Ornithicnites in Connecticut. In ' American Journal of Science,' vol. xxxi. 

 p. 174. January, 1837. By E. Hitchcock. 



Ornithicnites in Connecticut. By Professor B. Silliman. Op. cit. p. 

 165. 



Eossil Footsteps in Sandstone and Grauwacke, with a general table. By 

 E. Hitchcock. In ' American Journal of Science,' vol. xxxii. p. 174. 

 July, 1837. 



Newly Discovered Ichnolites at Midclletown, Connecticut. By W. C. 

 Bedfield. In ' American Journal of Science,' vol. xxxiii. p. 201. Ja- 

 nuary, 1838. 



Note to Professor Conrad's Bemarks on Ornithichnites. By Professor B. 

 Silliman. In ' American Journal of Science,' vol. xxxv. p. 246. Ja- 

 nuary, 1839. 



Final Beport on the Geology of Massachusetts. By E. Hitchcock. 62 

 quarto pages and 22 plates devoted to the footmarks, and 27 species de- 

 scribed. Amherst, 1841. 



Report by Professor H. D. Bogers, Lardner Vanuxem, B. C. Taylor, E. 

 Emmons, and T. H. Conrad, on the Ornithicnites, or Footmarks of Ex- 

 tinct Birds, in the New Bed Sandstone of Massachusetts and Connec- 

 ticut, observed and described by Professor Hitchcock, of Amherst. 

 In ' American Journal of Science,' vol. xli. p. 165. October, 1841. 



Five New Species of Fossil Footmarks. By E. Hitchcock. Described 

 in ' Transactions of American Association of Geologists and Naturalists,' 

 vol. i. p. 254. 1842. 11 pages and 1 plate. 



New Species of Footmark, with Bain-marks from Portland, Connecticut. 

 By W. C. Bedfield. In ' American Journal of Science,' vol. xliii. p. 172. 

 October, 1842. 



* This account nnd the bibliography is taken in the main from Hitchcock's ' Re- 

 port ou the Sandstone of the Connecticut Valley, especially its Fowl Footmarks.' 

 Boston, 1858. 



