CONTENTS. Vv 
iad in the light of Geological facts and Alea Religion, with Illustrations, 
Rey. RALD Mouuoy, 151.—Reliquize Aquitanice, being contributions to the 
Arch and Paleontology of Périgord and as ailvciuieie Provinces of South- 
rn France, H, LarteT and HENRY Caristy, 152. 
NUMBER CXLIX. 
Art, XVI—Comparison of the mean daily range of the nag 
Magnetic Declination, with the number of Auroras ob- 
served each year, and the extent of the black spots on 
the Surface of the Sun; by Ex1as Looms, ----------- 153 
XVII.—On a new Period in Chronology, called the Preces- 
noe Ferien: Hy a. WW. FP RRNOM, 60 oe 172 
XVIIL—Upon the Atomic Volumes of Solid Compounds; 
by Frank WicGGLEsSwoRTH CLARKE, ------------.--- 174 
X1IX.—Considerations on the apparent inequalities of long 
period in the mean motion of the Moon; by Sion 
NeEwcoms, 183 
XX.—Researches in Electro-Magnetism; by Atrrep M. 
M 
AYER, 195 
XXI—Abstract of the Second Series of Professor Meissner’s 
Researches upon Electrized Oxygen; by Grorexr F. 
KER, 213 
XXII.—Description of Sclerostoma pinguicola, a new species 
of Entozoa, from the Hog; by A. E. Verrm, ---..-- 223 
XXIII.—Notes on the structure of the Crinoidea, Cystidea 
and Blastoidea; by E. Brtires, 225 
XXIV. sdSontelinttions to Chemistry from the Laboratory 
of the Lawrence Scientific School. No. 12, -..._.._-- 240 
XXVI.—On the Corona seen in Total Eclipses of the Sun; 
by W. A. Norromy.c 2. a ke 250 
XXVII—Observations on Prehistoric Archzology in Greece; 
by Gores Frintay, ee Wee ataw sea kkk 251 
Chemistry and Physics.—On the theory of the Bunsen flame, Knapp: Production 
of Ozone in Rapid Com bustion, THAN, 255.—On the Constitution of Narcotine 
and its decomposition-produets kcepemmmeenestions the size of Molecules, 
Sir Wo. THOMPSON, me Comparis ical Equivalents ts, PLiny E 
CHasE, 261. 
Geology and Mineralogy.-On a Fossil Tooth from Table Mountain, W. P. BLAKE, 
262.—Cause of the Descent of Glaciers, } MOSELEY, Bat, 263.—The North Amer- 
