VIII.-THE WRITINGfS OF JULES MARCOU. 

 1. 



Mabcou, Jules. Sur l.i gdologie des Mom agues Eocheuses, eutre le Fort Smith 

 (Arkansas) et Albuquerque (Nouvean Mexiqne). <^Bull. Geol. Soc. France, *2d 

 ser., vol. xi, pp. 156-160. Paris, 1854. 



Mentions the existence, .at Tncnnic.iti. oCthe Jnr.issic form.ition. with Gryphiea dilatata and 

 Ostrea Marshii. 



Marcou, Jules. R^sumd of a geological recouuaissauce extentliug from Xaijoleon,. 

 at the junction of the Arkansas with the Missis.sippi, to the Pueblo de los Angeles, 

 in California. < U. S. Pacihc R. R. ExpL, lS53-'54, vol. iii, 8vo. Report of 

 explorations for a railway route near the 35th parallel of latitude, from the Mis- 

 sissippi River to the Pacilic Ocean, by Lieut. A. W. Whipple. Corps of Topo- 

 graphical Engineers, chap, vi, pp. 40-48. H. Doc. 129. [Wa.shingt*u, lc55. ] 



Mentions the occurrence of a number of fossils and employs for the first time the name- 

 Crryphcea tvcumcarii. 



3. 



Marcou, Jules. Rfeum^ d'une section geologique des Montagnes Rochenses a San 

 Pedro, sur la c6te de l'0c<5au Pacitique. <Bull. Geol. Soc. France, 2d ser., vol. xi, 

 pp. 474-478. Paris, 18.55. 



Mentions the occurrence of a Gryphoea at Laguna (New Mexico), and of Carboniferous fos- 

 sils near the San Francisco Mountains (Arizona). 



Marcou, Jules. Geological notes of a survey of the country comprised between 

 Preston, Red River, aud El Paso, Rio Grande del Norte. < U. S. Pacific R. R. 

 Expl., vol. iv, 8vo. Report of explorations of a route for the Pacific Railroad, 

 near the 32d parallel of latitude from the Red River to the Rio Grande, by Brevet 

 Capt. John Pope, Corps of Topographical Engineers. Chap, xiii, pp. 125-128. 

 H. Doc. 126. [Washington, 1855.] 



Mentions the occurrence of a number of fossils. 



5. 



Marcou, Jules. R^sum^ explicatif d'une carte geologique des fitats-Unis et des 



provinces anglaises de I'Am^rique du Nord, avec un profil geologique allant de 



la valine du Mississippi aux c6tes du Pacifiqne, et une placche de fossiles. 



•^Bull. Geol. Soc. France, 2d ser.. vol. xii, pp. 813-936, pis. xx-xxi. Paris, 1855. 



The occurrence of many fossils is mentioned in this paper. 



Gryphcea dilatata. Sowerby, pi. xxi, figs. 1 a. 6, and 2. 

 G. dilatata var. tucumcarii, Marcou. 1855, pi. xxi. flg. 3. 

 Ostrea mamhii, Sowerby, pi. xxi, fig. 4. 

 Gryphcea pitcheri. Morton, jil. xxi, fit;s, 5 a, 6. and 6. 



241 

 120 Bull. .30 10 



