AMERICAN NATURAL HISTORY. 



29 



Silliman (B.). Large deposit of graphite. — Amer. Journ. Sc. 2d 



Ser, XIV. 1852, 280. (183 



Teschemacher (J. E.). On Siiymaria. (Proc. Bost. Soc. Nat. 



Hist. IV. 1852).— Amer. Journ. Sc. 2d Ser. XIII. 1852, 

 265. (184 



Tuomey (M.). Description of some fossil shells from the tertiary of 

 the Southern States. — Proc. Acad. Nat. Sc. Philad. VI. 

 | 1852, 192. . (185 



Area cancellata. Pyrula ampla. 



Cardita trapezium. Trigonia divaricata. 

 Conus mutilatus, lunata. 



Cucullsea lsevis. Trochus nixus. 



Fusus abruptus. Voluta conoides. 



Warren (John C). On Dinotherium giganteum. — Proc. Amer. 



Acad. II. 1852, 305. (186 



Warren (John C). Description of a skeleton of the Mastodon gi- 

 ganteus of North America. Boston, 1852. 4to. (With 

 28 plates). (187 



Alger (F.). Sigillaria from the sandstone of the coal formation of 

 Nova Scotia.— Proc. Amer. Acad. II. 1852, 263. 188 



Leconte (John L.). Additional remarks on some fossil pachy- 

 derms from Illinois. — Proc. Acad. Nat. Sc. Philad. VI. 

 I 1852, 56. (190 



Hyops depressifrons, Lec. = Dicotyles depressifrons, Lee. = Platy- 

 gonus compressus, Lec. (in part). = Protochcerus prismaticus, 

 Lec. 



Leidy (J.). A new species of rhinoceros. — Proc. Acad. Nat. Sc. 



Philad. VI. 1852, 2. (191 



| Rhinoceros americanus. Nebraska. 



Leidy (J.). A fossil turtle from Nebraska. — Proc. Acad. Nat. Sc. 



Philad. VI. 1852, 34. (192 

 Emys Culbertsonii. 



