VII. 
XUL 
XIV. 
XX. 
XXI. 
XXiIl. 
XXII. 
CONTENTS. 
A new system of Crystallographic Symbols; by 
James D. Dana, A. B., 
. Apparatus for obtaining the Nitrogen from Atmos- 
pheric Air; by R. Hare, Prof. of OTST in 
the University of Pennsylvania, &c. 
. Large Volumescope, for the Analysis of Atmospheric 
Air, by means of Nitric Oxide; by Rozert Hares, 
Prof. of Chemistry in the Univ. of Penn., 
- On the Excrementitious matter thrown off by Plants ; 
by J. Burt, 
. Notice of an easy method of filling long Syphon 
tubes, in a Note addressed (by request) to the Editor ; 
by Wiruram Foster, Esq., 
Caricography ; by Prof. C. Dewey, 
Notice of the fossil teeth of Fishes of the United 
States, the discovery of the Galt in Alabama, and a 
proposed division of the American Cretaceous Group; 
by Samvet Georce Morron, M. D., 
- Remarks on the Retina; by W. C. Wallace, M. D. 
Surgeon to the N. Y. Institution for the Blind, 
. Observations on the Tertiary Strata of the Atlantic 
Coast; by T. A. Conran, 
- Notice of the Transactions of the Geological Society 
of France, for 1838, by M. Bovs, 8vo. p. 506. By 
C. U. Surparp, 
. Notice of the “‘ Travels of a Naturalist in the Alps; 
Read before the Society of Naturalists at Soleure, 
by their President, Fr. Jos. Huci1. By C. U. 
SHEPARD, 
X. Remarkable Parhelia, seen at Fort Howard, (Green 
Bay) Michigan Ter. ; by Lt. R. E. Clary, 
Replies to a Circular in relation to the occurrence of 
an unusual Meteoric Display on the 13th Nov. 1834, 
&c.; by Prof. A. D. Bacue, 
On the Evidence of Certain Phenomena in Tides and 
Meteorology ; by W.C. Reprietp, 
On the Resistance of Fluids; by Gro. W. Kee ty, 
Prof. of Natural Philosophy, in Waterville College, 
Experimental illustrations of the Radiating and Ab- 
sorbing Powers of Surfaces for Heat, of the effects 
of Transparent Screens, of the conducting Powers 
of Solids, &c.; by Prof. A. D. BacugE, 
v 
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305 
310 
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