AMERICAN NATURAL HISTORY. 



15 



Hubbard (0. P.)- On rutile and chlorite in quartz. — Proc. Amer. 



Assoc. Adv. Sc. iv. 1851, 25. (Ill 



Hubbard (0. P.). Notices of minerals and new localities.— Amer. 

 * Journ. of Sc. xi. 1851, 423. (112 



Hunt (T. S.). On some saline springs containing baryta and stroi> 

 tia.— Proc. Amer. Assoc. Adv. Sc. iv. 1851, 153. (113 



Jackson (C. T.). Description and analysis of pitch stone found at 

 Isle Royale, lake Superior. — Proc. Bost. Soc. Nat. Hist. iv. 

 1851, 39. (114 



Jackson (C. T.). Description and analysis of botryoidal fibrous 

 phosphate of lime, from Crown Point. — Proc. Bost. So . 

 Nat.' Hist. iv. 1851, 47. (115 



Jackson (C. T.). Description and analysis of Allanite from Frank- 

 lin, New Jersey. — Proc. Amer. Assoc. Adv. Sc. iv. 1851, 



323. (116 



Jackson (C. T.). Description of bismuthic Tellurium or tetrady- 

 mite, from the gold mine of Whitehall, Virginia; with an 

 analysis of the mineral, and its relation to the gold asso- 

 ciated with it. — Proc. Amer. Assoc. Adv. Sc. iv. 1851, 



324. (117 



Johnson (S. W.). On the Houghite of Prof. Shepherd. — Amer. 



Journ. of Sc. xii. 1851, 361. (118 



Owen (D. D.). On the existence of phosporus in the carbonites of 

 iron of the Des Moines coal fields. — Proc. Amer. Assoc. 

 Adv. Sc. v. 1851, 45. (119 



Seal (T. F.). On hydrargillite with the corundum of Pennsylva- 

 nia,— Amer. Journ. of Sc. xi. 1851, 267. (120 



