v1 CONTENTS. 
NUMBER CLXVI. 
P 
ART. oo — Duration of Color ae upon the 
Retina; by KL, Micwots, .. oc eS eo 243 
-shi TELEAMB, 55005 2% 259 
XXXIV.—Southward ending of a great “Synclinal i in the 
Taconic Range; by J. D. Dana. Wi th a a map (Plate 
pats Gee e eee sewer ch Mews coueV.Ge oui oul ld 268 
XXX _—Supposed_ chara oy in Pesiaylvaia south of the 
Terminal Morai by C. Lewis. With a map 
Plate IV, but 6 ei om We aloe ee a 276 
VI.—Mase of Me ane Tron from Wichita County, 
PeRery Dye WV. MAMET Soo kk oe ie 85 
XXXVII. 5 Ueaiuptieve Andes Dumas; by J. P. Cooke, 289 
XXXVIII.—New Meteorite; by I. R. EASTMAN, 299 
SCIENTIFIC INTELLIGENCE. 
Scientific Associations.—British Association, 300.—American Association, 303. 
Physics.—Papers read before the Physical Section at the meeting of the American 
Association for the Advancement of Science at Philadelphia, 307.—Magnetic 
Polari Neutrality, UGHES, 309.—Report on the oe 
Exhibition a Electricity held at Paris, August to Ae pic os D. P. HEA 
Modern Hig ies ives, M. Kisser: Light, P. G. Tar 
saps B eed Natural History.—Professor James Hall on the “ Hudson aided 
age o e Taconic slates, 311.--Earthquakes of taslits 312.—Azoice Syste 
and ie seiaeet ubdivisions, J. D. Wurrney and M. E. WabDswortn, 313. 
i port he 
RD, 315.—Geology of Minnesota, } INCHELL and W. UpHam: Tertiary 
Geology of the Eastern and Southern United States: Development and Generic 
relations of the sacea of the Carboniferous System of Scotland, J. Tomson, 
316.—Geologie von Bayern, K. W. von Giiaes Microscopic organisms in 
the Bowlder Clays of Chica go and vicinity, H. A. Jonson and B. W. 
THOMAS, 317.—- c peiewayoay sa gical Congress: Text-book of Descriptive 
eralogy, H. BAUERM Herdarite A. WEISBACH, i ot a 
H. N. Mosetey: Diamneesg Society of New York: George Bentham, 3 
Miscellaneous Scientific Intelligence.— Annals of the Astronomical Observatory of 
Harvard College, E. C. Prox OKERING, A. SEARLE and O. C. WENDELL, 319,.— 
Dimensions of the Gulf of Me exico, A. reconyernge Bureau of sae 
Information at fe oti, 320.—Report upon the unification - Longi 
ron : Universal time, B. A. Gouup, 321. leaden Dispensato 
ae Me pen , 322. 
