VI Contents. 
Pratt, 319. — Experiments relative to the Constitution of Pectolite, 
Pyrophyliite, Calamine and Analcite. F. W. Clakkk and Geokge 
Steiger. 320. — The Mineralogical Structure and Chemical Com- 
position of the Trap of Rocky Hill, N. J., Alexander Hamilton 
Phillips, 321. — Some Analyses of Italian Volcanic Rocks, Henry 
S. Washington, 321. — Mineralogical Notes: Melonite, Coloradoite. 
Petzite, Hessite, W. K. Hillebrand, 321. 
Monthly Authors'' Catalogue of America a Geological Literature, 321. 
Correspondence, 324. 
Personal and Scientific Netvs, 324. 
DECEMBER NUMBER. 
Biographical Sketch of Issachar Cozzens. Jr., Capt. A. 
W. VoGDES. [Plate XV.] . 327 
Shore Development in the Bras D'or Lakes. J. Edmund 
Woodman. [Plate XVI.] 329 
The Stone Reef at the Mouth of Rio Grande do Norte, 
Brazil. J. C. Branner and C. E. Gilman 342 
Crossing the Valdez Glacier, Alaska, at Bates' Pass. Capt. 
W. E, Abercrombie 349 
Some further Notes on the Weathering of Diabase in the 
vicinity of Cliatham, Virginia. Thomas L, Watson 355 
A Drainage Peculiarity in Androscoggin Co., Maine. H. 
T. Burr 369 
A Notable Ride. Samuel Calvin 372 
A Possibly Driftless Area in Northeastern Minnesota. 
U. S. Grant 377 
Review of Recent Geological Literature. — Some Glacial Wash-Plains 
of New England, J. B. Woodworth, 381. — The Mechanical Com- 
position of Wind Deposits, Johan August Udden, 382. — The Up- 
per Cambrian Faunas of Mt. Stephen, British Columbia; the Tril- 
obites and Worms, G. F. Matthew, 382. — Studies on Cambrian 
Faunas No. 4: Fragments of the Cambrian Faunas of New Found- 
land, G. F. Matthew, 383. 
Monthly Author'' s Catalogue of American Geological Literature, 383. 
Correspondence. — On some Fragments of Slate found floating on the 
sea in southwest Patagonia, Erland Nordenskjold, 388. — Some 
Cretaceous Drift Pebbles in northern Iowa, J. A. Udden, 389. 
Personal and Scientific News, 390. 
Index, 397. 
