MOOK, SrUDY OF THE MORRISON FORMATION 173 



1868. 1. Hayden, F. V. : "Remai'ks on the geological formations along the 

 eastern margins of the Rocky Mountains." Amer. Journ. Sci., 2nd ser., 

 vol. xlv, pp. 322-326, May, 1868. [Notes the presence of Jurassic beds, 

 which include what is now known as Morrison.] 



1871. 1. Marsh, O. C. : "On the geology of the eastern Uintah Mountains." 

 Amer. Journ. Sci., 3rd ser., vol. i, pp. 191-198, March, 1871. [Notes the 

 occurrence of a Megalosaurus tooth south bt the mountains.] 



1871. 2. Hayden, F. V. : "Notes on the geology of Wyoming and Colorado 

 territories." No. 2. Amer. Philos. Soc. Proc, N. S., vol. xi, pp. 25-26, 1871. 

 [Notes the presence of Jurassic beds in Como Bluif.] 



1873. 1. CoMSTOcic, Theo. B. : "On the geology of western Wyoming." Amer. 

 Journ. Sci., 3rd ser.. vol. vi, pp. 426-432, Dec, 1873. [Jurassic and Creta- 

 ceous beds of the Owl Creek Mountains described.] 



1874. 1. Marvine, a. R. : [Report of Middle Park Division.] U. S. geol. and 

 geog. Surv. Terr., embracing Colorado, F. V. Hayden in charge, 7th Ann. 

 Rep. [for 1873], pp. 83-192, 1874. [Many sections and descriptions of 

 Front Range strata.] 



1874. 2. Endlich, F. M. : [Report of the San lAiis Division.] U. S. geol. 

 and geog. Surv. Terr., embracing Colorado, F. V. Hayden in charge, 7th 

 Ann. Rep. [for 1873], pp. 275-301, 305-361, 1874. [Many sections, including 

 that at Caiion City, Colorado.] 



1874. 3. Marvine, A. R. : "Gold Hill mining region, its position and general 

 geology." U. S. geol. and geog. Surv. Terr., embracing Colorado, F. V. 

 Hayden in charge, 7th Ann. Rep. [for 1873], pp. 685-687, 1874. [Descrip- 

 tions of Front Range geology. Triassic, Jurassic and Cretaceous present 

 in the hog-backs.] 



1874. 4. Gilbert. G. K., Howell. E. E., and Loew, O. : Geologic Atlas. U. S. 

 geog. and geol. Explorations and Surveys west of the 100th meridian, 

 G. M. Wheeler in charge, 20 sheets folio, 1874? [Distribution of the 

 .Turassic shown.] 



1875. 1. Cope, E. D. : "Report on the geology of that part of northwestern 

 New Mexico examined during the field season of 1874." U. S. geog. and 

 geol. Explorations and Surveys west of the 100 meridian, by Wheeler, Ann. . 

 Rep. in Ann. Rep. of the Chief of Engineers, U. S. A., for 1875. App. LL, 

 pp. 61-97, 1 p]., 1875. [Descriptions of the Jurassic beds at Colorado City 

 and northern New Mexico.] 



1875. 2. LoEW, Oscar : "Geological and mineralogical report on portions of . 

 Colorado and New Mexico." U. S. geog. and geol. Explorations and Sur- 

 veys west of the 100th meridian, by Wheeler, Ann. Rep., in the Ann. Rep. 

 of the Chief of Engineers, U. S. A., for 1875, App. LL, pp. 97-116, 1875. 

 [Description of the Arkansas Valley section.] 



1875. 3. CoMSTOcK. Theo. B. : "Geological report." Report upon the recon- 

 naissance of northwestern Wyoming, including Yellowstone National Park, 

 for 1873, by Jones, pp. 85-259, map, 1875. [Correlation tables, notes on 

 Jurassic sandstone.] 



1875. 4. Cope, E. D. : "The geology of New Mexico." Phila. Acad. Sci., 

 Proc, vol. X, pp. 152-153, Aug., 1875. [Tooth of L(elaps found.] 



1875. 5. Howell, E. E. : "Report on the geology of portions of Utah, Ne- 

 vada, Arizona and New Mexico examined in 1872 and 1873." U. S. geog. 



