550 KICHARI) SWANX LFLL ON 



■71. [A(^ciiiiiit and I'oiiiiilfte list nf the Iclmu/.oa of tin- CdiiMertk'Ut valley. J Walling ami (iray's urticial topograph- 

 ical atlas of Massachusetts, p. xx-xxi. 

 '73. Footprints in the rocks. I'op. sci. monthly, vol. ;J, p. 428-441, text tiii. 1-T. 

 ■89a. [Remarks on A. Wanner's paper on the discovery of fossil tracks in the Triassic of York county, I'a. | Proc. 



Amer. assoc. adv. sci., .37th meeting, Cleveland, 1888, p. 180. 

 '89b. Recent progress in ichnolngy. Proc. Bo.ston soc. nat. hist., vol. 24, p. IIT-PJT. 

 Hitchcock, Edward. 



'36. Ornithichnology. — Description of the footmarks of birds, (Ornithichnites) on new red sandstone in Massachu- 



.setts. Amer. .journ. sci. and arts, vol. 29, p. 307-340, pi. [1] fig. 1-20, 2.3-24; pi. [2], tig. 21-22, pi. [3]. 

 '37a. Ornithichnites in Connecticut. Amer. journ. .sci. and arts, vol. 31, p. 174-175. 

 '37b. Fossil footsteps in sandstone and graywacke. Amer. journ. sci. and arts, vol. 32, p. 174-17(). 

 '41. Final report on the geology of Massachusetts. Northampton: 4to ; 11 -f 831 pp., illus. 



(See p. 458-525, pi. 29-51.) 

 '43. Description of live new species of fossil footmarks, from the red sandstone of the valley of Connecticut river. 



Reports of the first, second and third meetings of assoc. of Amer. geologists and naturalists, p. 254-264, pi. 11. 

 '44a. Report on ichnolithology, or fossil footmarks, with a description of .several new species, and the coprolites of 



birds, from the valley of the Connecticut river, and a supposed footmark from the valley of Hiid.son river, 



Amer. journ. .sci. and arts, vol. 47, p. 292-322, pi. 3-4. 



(Abstract in Neues jahrb. f. mineral., etc., 1845, p. 753-757.) 

 '44b. Rejoinder to the preceding article of Dr. Deane. Amer. journ. sci. and arts, vol. 47, p. 390-399. 



( Reply to J. Deane, '44b.) 

 ■45a. Extract of a letter from Prof. E. Hitchcock, embracing miscellaneous remarks ujion fossil footmarks, the 



lincolnite, &c. Amer. journ. sci. and arts, vol. 48, p. 61-65. 

 '45b. An attempt to name, classify, and describe, the animals that made the fo.s.sil footmarks of New England. 



[Abstract.] Proc. 6th annual meeting assoc. Amer. geologists and naturalists. New Haven, Conn., April, 1846, 



p. 23-25. 

 '47. Description of two new siiecies of fossil footmarks found in Mas.sachusetts and Connecticut, or, of tlie animals 



that made them. Amer. journ. sci. and arts, ser. 2, vol. 4, p. 46-57, text fig. 1-3. 

 '48. An attempt to discriminate and describe the animals that made the lo.s.sil footmarks of the United States, and 



especially of New England. Mem. Amer. acad. arts and sci., new ser., vol. 3, p. 129-256, table, pi. 1-24. 

 '55. Shark remains from the coal formation of Illinois, and bones and tracks from the Connecticut river .sandstone 



Amer. journ. sci. and arts, .ser. 2, vol. "20, p. 416-417. 

 '56. Description of a new and remarkable species of fossil footmark, from the sand.stone ni 'rnrner's Falls, hi the 



Connecticut valley. Amer. jimrn. .sci. and art.s, ser. 2, vol. 21, p. 97-100, 1 text fig. 

 '58. Ichnology of New England. A report on the .sand.stone of the Connecticut valley, especially its fo.ssil footmarks, 



made to the government of the Connnonwealth of Massachusetts. Boston : 4to ; xii -)- 220 pp., 60 pis. 

 '61. Remarks upon certain points in ichnology. Proc Amer. a.s.soc. adv. sci.. 14th meeting. Newport, 1860, p. 144- 



1.56, text fig. 1-4. 

 '63. New facts and conclusions respecting the fossil footmarks of the Connecticut valley. Amer. journ. sci. and arts, 



ser. 2, vol. 36, p. 46-57, text fig. 1-2. 

 '65. Supplement to llie Ichnology of New England. Boston : 4to ; x -f 90 pp., 20 pis. 

 '66. SupplemeiU to the Ichnology of New England. Proc. Amer. acad. arts and .sci.. vol. 6. )>. 85-92. 

 Horn.stein, K. 



'76. [On VhirotherhiDi ijeinitzi of Karlshafen.] Neues jahrli. f. mineral., geol., 11, ])alaeontol., 1876, )i. 923-924. 

 von Humboldt, A. 



'35. Note sur des empreintes <le |iieils d'un i|uadrupeile dans la formation de gres bigarri" de llildliurghau.sen en 



Allemagne. .\nn. des sci. nat., /.ool.. ser. 2. vol. 4, )i. 135-138, pi. 5. 

 Huxley, T. H. 



'59. On the Stayonolepis nihei-tsuni (Agassiz) of the Elgin sandstones ; and on the recently ili.scovered footmarks in the 



sand.stones of Cummingstone. Quart, journ. geol. soc. London, vol. 15, p. 440-460, pi 14. 



