VI Contents. 
Cuba, L. E. Levy, 328.— The slate regions of Pennsylvania, Mans- 
KiKLD Mekbiam. 328.— Iron making in Alabama, W. B. Phillips, 
328.— Guide to the study of Geological collections of the New York 
state museum, F. J. H. Merkill, 32t).— On hardystonite, a new cal- 
cium-zinc silicate from Franklin' Furnace, J. E. Wolff, 329. — Re- 
port on the boundary between the Potsdam and Pre-Cambrian 
rocks north of the Adirondacks, H. P. Gushing, .330.— Augite-sy 
enite gneiss near Loon lake. New York, H. P. Gushing, .330. 
Monthly Authors' Catalogue of American Geolotjieal Literature, 3:5L 
Con'Ci7)o?idt^uce.— Gollocting Fossils in the Gincinnati Shales. Henry 
E. DicKHAUT, 33.').— "The truth about the Nampa Figurine,"' W. 
J. McGee, 330. 
PcrsoiKtl and Scientijiv Nru's, 337. 
JUNE NUMBER. 
Prof. Benjamin F. Mudge. S. W. Williston. [Portrait, 
Plate XIL] «39 
Li'wiiison Lessing's Classificfition of Rocks and Differentiation 
of Magmas 3i(> 
Englacial Drift in the Mississippi Basin. Warren Up- 
HAM 369 
The Hatteras Axis in Triassic and in Miocene Time. L. 
C. Glenn 375 
Observations on Dirtstorms. O. H. Hershey 380 
Rev ietc of Recent Geological Literature. — Researches into the Mono- 
graptidte of the Scanian Rastrites Beds, S. L. Tornquist, 383. — 
Palteontologiska notiser af Gerhard Holm, 383. — Summary Report 
of the Geological Survey Department [of Canada] for the year 1898. 
George M. Daw.son, Director, 384. — Wells of Northern Indiana, 
Frank Leverett, 385. — The Fossil Bison of North America, Fred- 
eric A. Lucas, 385. — Remarks on the Heliolithidje, G. Linkstrom, 
385. — Des Relations des Mers Devoniennes de Bretagne et des Ar- 
dennes, Chas. Barrios, 38G. — L'Extension du Silurien Superieur 
dans le Pasde-Calais, Chas. Barrois .38G. — Les Goniatites du 
Ravin de Conlarie (Haute Garronue), Chas. Barrois, 386. — Stein- 
bruchindustrie und Steinbruchgeologie, Dr. O. Hermann. 387. — 
West Virginia Geological Survey, I. C. White, State Geologist, 
.386. — The characters of crystals : an introduction to Physical Crys- 
tallography, Alfred J. Moses, 389. 
Monthly Authors' Catalogue of American Geological Literature, 389. 
I^ersonal and Scientijlf News, 394. 
Index, 397. 
