VI CONTENTS. 



NUMBER LXXVI. 



Art. XXVI.— On the Sensation of Color; by C. S. Peirce,.. 247 



XXVII. — Note on the Binocular Phenomena observed by 



Professor Nipher ; by J. LeConte, . 252 



XXVIII.— Revision of the genus Belemnocrinus ; by Chas. 



Wachsmutii and Fi;a\k Springer, 253 



XXIX. — Thorpe's urn! Hunsen's methods for the Estimation 



of Nitrogen in Nitrates ; bv S. W. Johnson, 260 



XXX.— Westfield during the Champlain Period ; by J. S. 



Diller, 262 



XXXMs.— New Embryonic Forms of Trilobites ; by S. W. 



Ford. With a plate, . _ 265 



XXXI.— The Winds of the Globe ; or the Laws of Atmos- 

 pheric circulation over the surface of the Earth,. 273 



XX XII.— On some Nit ro-derivatives of Diphenylamine ; by 



P. T. Austen, 279 



XXXIII.— Note on Mineral Analysis ; Note upon some Flu- 

 orides ; Note on Molecular Volumes ; by F. W. Clarke, 290 



XXXIV.— On the identitv of the so-called Peganite of Arkan- 

 sas with the Variscite of Breithaupt and Callainite of 

 Damour; by A. H. Chester, 295 



XXXV.— On a "fibrous variety of Sepiolite from Utah; by 



A. H. Chester, '... 296. 



XXXVI.— On Dr. Peale's Notes on the Age of the Rocky 



Mountains in Colorado ; by J. J. Stevenson', 297 



SCIENTIFIC INTELLIGENCE. 



Chemistry and I ns, Bosuski and Kajander. 



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