BIBLIOGRAPHY OF TENNESSEE GEOLOGY. 73 



Troost (Gerard) Continued. 



23. Description d'un nouveau genre de fossiles. 



Mem. de la Soc. Geol. de France Tome 3 Mem. No. 4, 1834, pp. 87-96, pis. 



9-11. 



Conotunularia n. gen. 



C. Cuvierii pi. 9 f. 1. C. Brongniartii pi, 9 f. 2. C. Goldfussil pi. 9 f. 3. 

 Orthoceratites environs de Nashville. 

 The author describes a new species of Asaphus from Perry County, as 



A. megalophthalmus, p. 94, pi. 11, fig. 5, and an undescribed Trilobite pi. 



11, fig. 6-7. 

 The first is a Phacops approaching P. Hudsoni Hall, the second a species 



of the genus Dalmanites. 

 The author does not give a name but figures pi. xi, fig. 4 and 8 an excellent 



figure of Brachiospongia digitata. 

 The author gives a Geol. Section from Memphis to French Broad River, 



pi. xi, f. 11 and 12. 



24. Crinoids of Tennessee. 



(Unpublished, see Wood, Elriva. A critical summary of 1909.) 



Tuomey (M.) 



A brief notice of some facts connected with the Ducktown, Tenn., copper 

 mines. 

 Am. Jour. Sci., 2d ser., vol. 19, pp. 181-182, 1855. 



U. 



Ulrich (Edward Oscar). 



1. Portland cement resources of Tennessee. 



U. S. Geol Surv., Bull. No. 243, pp. 301-307, 1905. 



Describes the occurrence, geologic relations, and character of limestone 

 in Tennessee suitable for manufacture of Portland cement. 



2. A correlation of the Lower Silurian horizons of Tennessee and of the Ohio 



and Mississippi valleys with those of New York and Canada. 



Amer. Geol., vol. 1, pp. 100-110, 179-190, 305-315, 1888; vol. 2, pp. 39-44, 1888. 



Ulrich (E. O.) 



See Hayes (C. W.) and Ulrich (E. O.) 

 See Winchell (Newton H.) and Ulrich (E. O.) 



U. S. Coast Survey. 



Geographical positions determined approximately in West Virginia, Ken- 

 tucky, Tennessee, Alabama, Mississippi and Missouri. 

 U. S. Coast Surv., Kept., 1865, App. 10, p. 137. 



Usher. (F. C.) 



On the elevation of the banks of the Mississippi. 

 Amer. Sci., vol. 31, pp. 294-296, 1837. 



Vanderford (Chas. F.) 

 The soils of Tennessee. 



Bull. Univ. of Tenn. Agr. Exper. Sta., vol. 10, No. 3, p, 139, 3 maps Knox- 

 ville, 1897. 



Van Hise (Charles Richard) and Leith (Charles Kenneth). 

 Pre-Cambrian geology of North Carolina. 



U. S. Geol. Surv., Bull. 360, 939 pp., maps, 1909. 

 For Tennessee see pp. 685-687. 



