CONTENTS OF VOLUME XXXVIII. 
x¥ NUMBER CXII. 
Art. I. On certain Harmonies of the Solar we ; 3 Professor 
Danie. Kirxwoop, - - 
Il. Abstract of Prof. sista s Researches on Oxygen Onone 
and Antozone; by S. W. Jonnson, 
Ill. On the egos of the Earth’s Atmorpere by es 
LAND ABB 
IV. On the Distribution of the 5 Dark Liaw in the Speci of ri 
Elements ; by Prof. Gustavus Hinricus, 31 
V. On the structural characters of the so-called Mninaiion of 
North America; by Dr. Wm. Stimpson, - 41 
VI. The Original accounts of the displays in vive times of the 
November Star-Shower; together with a determination of 
the length of its cycle, its annual period, and the probable 
orbit 8 the group of bodies around the sun; by H, A. 
: Newt : 1. oe 
VII. On Wiecsc Physics e Prof. Ww. as easy (eee 
VIII. On the Improvement of the Elements of a Comet’s Orbit : 
runnow’s method ; communicated by C. AzsE, - 79 
IX. Notes on the Platinum Metals, and their — from 
each other; by M. Carey Lea, . 
X. Contributions to Lithology ; by T. Sterry sey: M. A., Fr. R S, 91 
XI. On the so-called ‘ Barrel-Quartz,” of Nova Scotia; by 
B. Siruman, Jr.,  - - - - - - oe 
SCIENTIFIC INTELLIGENCE, 
Chemistry and Physi On the f the Sun, Maenvs, 106.—On the Spectrum 
of Thallium, W. A. Minter: On mead —— eens of various bodies, 
and on the photographic effects of tra obtained by means of the 
electric spark, W. A. Mitter, 107.—On the spectrum oo chloro-chromic acid, GorTs- 
cHALE and DrecusEL: Un the condensation of vapors upon the surface of solid bodies, 
