VIII -THE WRITINGS OF JULES MARCOU. 



Marcou, Jules. Sur la g^ologie des Montagues Rocheuses, eutre le Fort Smith 

 (Arkansas) ct Albuquerque (Nouveau Mexiqnc). <^Bull. Geol. Soc. France, :2d 

 ser., vol. xi, pp. 156-160. Paris, 1^54. 



Mentions the existence, at Tncumcaii, o£the Jurassic formation, with Oryphcea dilatata and 

 Ostrea 2Iarshii. 



2. 



Marcou, Jules. Resume of a geological recouuaissauce exteudiug from Napoleon, 

 at the junction of the Arkansas with the Mississippi, to the Pueblo de los Angeles, 

 in California. <U. S. Pacitic R. R. ExpL, 18.5:3-'.54, vol. iii, 8vo. Report of 

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

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

 graphical Engineers, chap, vi, pp. 40-48. H. Doc. 129. [Washington, lb55. ] 



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

 Gryphcea tucumcarii. 



3. 



Marcou, Jules. Resume d'une section geologique des Montagues Rocheuses a San 

 Pedro, sur la cote de I'Occau Pacifique. <^Bull. Geo). Soc. France, 2d ser., vol. xi, 

 pp. 474-478. Paris, 18.55. 



Mentions the occurrence of a Gryphcea at Laguna (Xew Mexico), and of Carboniferous fos- 

 sils near the San Francisco Mountains (Arizona). 



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

 Prestou, Red River, and 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, l)y Brevet 

 Cai)t. 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. Resum^ explicatif d'une carte geologique des £tats-Unis et des 



provinces anglaises de I'Amerique du Nord, avec uu profil geologique allant de 



la vallee du Missis.sippi aux cotes du Pacifique, et une phidiche de fossiles. 



<^Bull. Geol. Soc. France, 2il 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, tigs. 1 a, b, and 2. 

 G. dilatata var. tucumcarii, Marcou, 18.55, pi. xxi, fig. 3. 

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

 Gryphcea X)itcheri. Morton, \\\. xxi. fiiis. 5«, h, and 6. 



241 



120 Bull. 30 10 



