lv CONTENTS. 
No. 18.— Reports on the Dredging Operations off the West Coast of Central 
America to the Galapagos, to the West Coast of Mexico, and in the Gulf 
of California, in charge of ALEXANDER AGASSIZ, carried on by the U. S. 
Fish Commission Steamer “ Albatross,” Lieut. Commander Z. L. TANNER, 
U.S.N., commanding. V. Report upon Rocks collected from the Galapa- 
gos Islands. By GrorcEe P. Mrerrity. July, 1895 
No. 14.— Contributions from the Petrographical Laboratory of the Harvard 
__ University Museum. VI. A Basic Dike in the Connecticut Triassic. By 
“L. S. Griswotp. (1 Plate.) August, 1893 
No. 15.— Notes on the Geology of the Island of Cuba, based upon a Recon- 
noissance made for Alexander Agassiz. By Roperr T. Hity. (9 Plates.) 
April, 1896 
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