DONS. — 19 MARS AU 18 JUIN 1888 75 



Luis M. Vidal. — Resefia geologica y minera de la provincia de Gerona. 



États-Unis. — Albany, — Bulletin of the New York state 

 muséum of Natural history. Vol. 1-2, mai 1887. 



— Bulletin of the New York state Muséum of Natural history, 

 n" 3, mars 1888. 



John Smock. — Building stone in the state of New York. 



Boston. — Memoirs of the Boston Society of natural history. 

 Vol. VI, no^ 1-4. 



Dana. — History of the changes in the Mt-Loa Craters (PI. IV, Vj, 282. 



Hillebrand et Washington. — Note on certain rare Copper Minerais from 

 Utah, 29S 



Walcott. — The taconic System of Emmons and the use of the name taconic in 

 géologie nomenclature, 307. 



Mo Gee. — Three formations of the middle Atlantic Slope, 328. 



Kemp. — Diorite Dike at Forest of Dean, Orange Gounty, 331. 



Holden. — Note on Earthquake intensity in San Francisco, 427. 



White. — Relation of the Laramie group to earlier and later formations, by 

 C. A. White, 432. 



Williams. — The Gabbros and Diorites of the « Cortlandt séries » on the Hud- 

 son River near Peekskill, 438. 



Me. Gee. — Three Formations of the middle Atlantic Sloop, 448. 



Biddle. — Notes on the surface geology of southern Oregon, 475. 



Clarke. — Some Nickel ores from Oregon, 483. 



Merrill. — Note on the secondary enlargement of Augites in a Peridotite from 

 little Deer Isie, 488. 



— New Météorite from the San Emigdio Range, San Bernardino County, Cali- 

 fornia, 490. 



Cambridge. — Bulletin of the Muséum of comparative zoôlogy at 



Harvard Collège. Vol. XIII, n°^ 1-8. Wholes séries, vol. XVI, n° 1. 



William Hobbs. — On the petrographical characters of a Dike of Diabase in the 

 Boston Basin (1 pi.). 



— Memoirs of the Muséum of comparative zoôlogy. Vol. XV. 

 New-York. — Transactions of the — Academy of Sciences. 



Vol. VI. 



Britton. — Additional notes on the geology of Staten Island. 

 Chittenden, — Observations upon Earthquakes. 

 Friedrich. — Notes on local mineralogy. 

 William Hidden. — A notable discovery of precious stones. 



— On an Iron Météorite that fell at Mazapil, Mexico. 

 Kunz. — On the new artificial rubies, 4. 



— Meteoric Iron fron CarroU (Kentucky). 



— Hydrophane from Colorado. 



— GrystaJs of hoUow quartz from Arizona. 



— On Jade and Jadeite. 



— Description of the météorite which feli near Cabin creek. 



