CONTENTS OF VOL, IV. 
a 
GEOLOGY, MINERALOGY, &c. 
Pag 
Mr. Z. Cist on the Wilkesbarre —— &e. we a ae 
d tl. 
and a section plates I. an 
Mr. Thomas Nuttall on the Nar eébioe of Hoboke en, &c. 
eens . Hall on Iron and its Manufacturers in Vermont, &c. 
Dr. J. W. Webster’s Sean notices in Mineralogy, &c. (com- 
municated in May, 18 
2 Spero notices in pi: Mineralogy, &e. by Messrs. 
J.P. J 
kine, Cist, T. Seal, and Drs. L. Foot a0 
H. St 
Notices in iioecals , &c. by the ‘Edtjor joa ‘aoe: 
President Thomas ooper, m D. on ee and Volcanic 
2 
substances 
Dr. J. W. Webster's foreign notices in Mineralogy, pence’ 
ancient Arts, 
&c. 
r. D.W. Barton on the Gasloxy of the Catskills (ith aplate) 249 
rk on the Azo 
Notice of Dr. J. W. Webster’s wo 
M. Alexander Brongniart on Vegetable F seaile ‘which trav- 
erse the layers of coal formations, (translation, with a plate,) 
Miscellaneous Notices of American Mineralogy, &c. 
of. Dewey’s sitet of various aie Sag - 
. arton, on the Virginia fluor spar, 
Major Delafield on the L. — sep of Strontian, &e. 
r. J, I. Bigsby on the sa 
Major Delafield on the penis of the Lake Regioas; 
H. H. Hayd aa rep on Cobalt & Manganese Ores, 
Mr. T. H. Web n Minerals near she ep is I.) 
Mr. H.R.S 
BOTANY. 
Prof. D. B. Douglass and Dr. J. biuoa on the Plants # the 
North-West, 
Mr. John P. Brace on the Plants of Litchield ie. - 
Professor J. Green on the Cotton Plan 
Mr. John P. Brace’s Catalogue of Plants near Litchfield, &c. 
ZOOLOGY. 
Dr. J. E. Dekay on the Pennatule fléche, (witha figure,) 
266 
274 
274 
277 
a 9 
a2 
3 
284 
285 
86 
292 
87 
