CONTENTS. 
GEOLOGY, MINERALOGY, TOPOGRAPHY, &c. 
Arv. a — relating to certain parts of the atate of Suen - = 
sion, 6 0. Enemies See ee D- Mason, - - 
1 M scellaneous Localities of Mimera!s, 
lV. Noti otice of Minerals, &c. from Palestine Bey, Bion i ina aletter 
from the Rev. Isauc Bird to the 
BOTANY 
Vv. le he ae Ag by Prof. Dewey; continued from Vol. IX. p. 
ZOOLOGY. 
Vi. gree and Considerations concerning Two-Headed Sakae 
by Dr. Samuel L. Mitchill 
VIL. wt several new apeuios “of Batrecian Reptiles 
vations on the Larva of ate ot by Richar 
Harke, = Se 
‘Vii. Remarks coveivaned bey Art. X. Vol. 1X. p. 288, we 
CHEMISTRY, PHYSICS, MECHANICS, &c. 
2 3, 46 A << ES s ig 7 p rh : 
= . ae: M. D. — - . ee 
X. General Reflections on Hea 
AL Remarks 0 ets Mr. Quinby's. wale on | Crank Motion, in the 
ber of this Journal, 
XII. neneeks a on Art, XXIV. ‘of No. Z, Vol. 1X. - 356 
XL 3g es on AntHracite, risa — by Larduer 
102 
sy: Papers roma to the Fusion of Car 
ks on the Cut 
1 
ting of Steel i colt i ive, ina letter to 
af. 
the editor, from Thomas Kendall, 
XVI. Gn fe te of Water- Wheels; sstenct of a letter home ‘ 
rof. veland, 
XV. Notice of the Brewater Wool Spinuing Frame, in @ letter 
rom 8. D. H $q-, 0 
Vill. Agatpek of ae "Ma land Aer. lite by George Chilton, Lec- 
* turer on Chemist rg seins : ee 131 
MISCELLANEOUS. 
XIX. On ~ ashe og Passage; by leaac Lea, 138 
XX. An Fpitao f he Improved Bestataietign System of Pauca 
us Watiam Maclare, Esq., 3 
XXL Notes * by Dr. —— in answer to inquiries made 
by Caleb Atwater, Fq., " 2 
Y SAR, ppreor of Dr. "Phameon ‘a fies principles of Chethisiry 5 & 
tracte from forcic gp letters oa various Disa s%5 eldcened <— 
