CONTENTS. 
No. 1.—Contributions from the Petrographical Laboratory of the Harvard 
University Museum, in charge of J. EK. Wolff. I. On the Petrographical 
Characters of a Dike of Diabase in the Boston Basin. By Witi1am H. 
PMoreewierlate:) "March; 1TSGS Wert.) memos) WMS ig, a cuiitaneane 
No. 2.— On the Geology of the Cambrian District of Bristol County, Massa- 
chusetts. By N.S. SaHater. (Map and 2 Plates.) October, 1888 
No. 3.— Specimens of Fossil Plants collected at Golden, Colorado, 1883, for 
the Museum of Comparative Zoology at Cambridge, Mass. Examined and 
determined by Leo LesQqueREux. December, 1888 
No. 4.— The Faults in the Triassic Formation near Meriden, Connecticut : 
A week’s work in the Harvard Summer School of Geology. By Wi1i1am 
Morris Davis, (5 Plates.) April, 1889 
No. 5.— On the Occurrence of Fossils of the Cretaceous Age on the Island 
of Martha’s Vineyard, Mass. By N.S. Suauter. (2 Plates.) June, 1889. 
No. 6.— The Intrusive and Extrusive Triassic Trap Sheets of the Connecti- 
cut Valley. By Witi1am Morris Davis and Cuaries Livy WHITTLE. 
(5 Plates.) December, 1889 oT Rate a ot ee ees 
No. 7.— The Topography of Florida. By N. S. SaHater. With a Note by 
Alexander Agassiz. (1 Plate.) March, 1890 . : 
No. 8.— Contributions from the Petrographical Laboratory of the Harvard 
University Museum. IJ. On some Occurrence of Ottrelite and Ilmenite 
Schist in New England. By J. E. Worrr. April, 1890 . 
No. 9.— Contributions from the Petrographical Laboratory of the Harvard 
University Museum. III. On Keratophyre from Marblehead Neck, Massa- 
chusetts. By Jonn H. Sears. July, 1890 . 
No. 10.— Contributions from the Petrographical Laboratory of the Harvard 
University Museum. IV. Metamorphism of Clastic Feldspar in Conglom- 
erate Schist. By J. E. Wotrr. (2 Plates.) September, 1891 
No. 11.— The Conditions of Erosion beneath deep Glaciers, based upon a 
Study of the Boulder Train from Iron Hill, Cumberland, R.I. By N. S. 
SHALer. (Map and 4 Plates.) January, 1893. Sg ne 5 
No. 12.— Contributions from the Petrographical Laboratory of the Harvard 
University Museum. V. Acmite Trachyte from the Crazy Mountains, 
Montana. By J. E. Wotrr and R.S. Tarr. April, 1898 
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