TABLE OF CONTENTS. 

 J. B. HOLDER. 



The Rise and Progress of Invertebrate Zoology (November 16, 1885) 29-55 

 Tlie Occurrence of a Large Marine Vertebrate of Unknown Form 



on the Shore of Florida (February 22, 1886), abstract 165-168 



OLIVER P. HUBBARD. 



Two Varieties of the New Red Sandstone used for Building in New 



Haven, Conn. (October 12. 1885), abstract 12 



DAVID S. JORDAN and M. "W. FORDICE. 



A Review of the North American Species of Petromyzontidce (De- 

 cember 21, 1885), read by title m 



ALEXIS A. JULIEN. 



On a Phosphorescent Flagellate Infusorian, from the Surf at Ocean 



Beach, N. J. (October 19, 1885), brief abstract 15-16- 



On the Valuation of Decomposition in Iron Pyrites: its Cause, and 

 its Relation to Density (April 26, 1886), tvithout abstract 231 



GEORGE F. KUNZ. 



On the Agatized AVoods, and the Malachite, Azurite, etc., from Ari- 

 zona (October 5, 1885), abstixtct 9-11 



On Meteoric Irons (November 30, 1885), read by title 74 



Rare Gems and Interesting Minerals (January 25. 1886), abstract. . . 131 



Notes on some Minerals from the West (April 5, 1886), abstract 213- 



Mineralogical Notes (April 19, 1886) 223-227 



A Meteorite from Catorce, Mexico (April 19, 1886) 227 



On Rock Crystal; its Cutting in Japan, Germany, and the United 



States (May 31, 1886) 267 



GEORGE N. LAWRENCE. 



Description of a New Species of Bird of the Genus Engyptila, with 



Notes on Two Yucatan Birds (October 26, 1885), read by title. . , 17 



Characters of Two Supposed New Species of Birds from Yucatan 

 (November^23, 1885), read by title 55 



ALICE D. LE TLONGEON. 



Yucatan, its Ancient Temples and Palaces (March 1, 1886), abstract, 



169-178 



