14 
THE GEOLOGIST. 
Mr. "William Wilsou, who observed impressions upon tliem, which lie 
regarded as those of the " turkey tribe," They {Tridentipes 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 1836 in the ' American Journal of Science.* 
With a few eminent exceptions — Silliman, Buckland, Eogers, Em- 
mons, etc. — his views were not adopti-d 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.* 
EIBLTOGRAPHT OF CONNECTICUT FOOTPRINTS. 
OrnitMcnoloyy ; or, Description of the Footmarks of Birds (Ornithicnites) 
on New lied 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 Middletown, Connecticut. By W. C. 
Redfield. In 'American Journal of Science,' vol. xxxiii. p. 201. Ja- 
nuary, 1838. 
Note to Professor Conrad's Kemarks on Omithichnites. By Professor B. 
Silliman. In 'American Journal of Science,' vol. xxxv. p. 246. Ja- 
nuary, 1839. 
Final Eeport 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. 
Keport by Professor H. D. Rogers, Lardner Vanuxem, K. C. Taylor, E. 
Emmons, and T. H. Conrad, on the Oniithicnites, or Footmarks of Ex- 
tinct Birds, in the New Eed 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 Eain-marks from Portland, Connecticut; 
By W. C. Eedfield. In ' American Journal of Science,' vol. xliii. p. 172. 
October, 1842. 
* This account and the bibliojiraphy is taken in the main from Hitchcock's ' Re- 
port ou the Sandstone of the Connecticut Valley, especially its Fowl Footmarks.' 
Boston, 1858. 
