viii TABLE OF CONTENTS. 
Cc. HART MERRIAM. 
PAGE 
Description of a new species of Spermophile (S. Beldingi) from 
California (December! 051888); ttle a.) -teeleeia ele > «cle 
JOHN S. NEWBERRY. 
The Great Museums of Europe; notes on their Construction and 
Arrangement (October 22, 1888), without abstract.............. dd 
The new Oil-field of Colorado, and its bearing on the question of 
the Genesis of Petroleum (November 26, 1888). abstract........ 25 
The Pavements of the great cities of Europe, with a review of the 
best materials and methods available for the City of New York 
(December 17, 1888); @bsiraer, oF. 022 ne) epee eee 41 
The Man of Spy,—paleolithic skeletons recently discovered near 
Liége, Belgium (March 11, 1889), abstract.... .......-+...5 «+ 132 
Amber, its History, Occurrence and Use (April 8, 1889), abstract... 156 
JOHN PATTEN. 
The Cause of the Tides (May 27, 1889), without abstract............ 187 
THEODORE D, RAND. 
Comparison of the Rocks of Philadelphia and New York (Janu- 
BIE 1 HL OSS )istars: werciatee ctevotctere rere ey soteve steels Valet ees ceeeres Cee 47 
JOHN K. REES. 
Astronomical Progress and Discovery for the year ending October 
1st; 1888) (October; 291888) aOsinacha.. on). <0 sl 1 +1) «5/01 eee 13 
EUGENE N, 8. RINGUEBERG, 
The Calceocrinidee,—a Revision of the Family, with descriptions of 
New Species (April 1, 1889); Pile: orcs <a. .ape mss met yon Bop sates 152 
HENRY H. RUSBY. 
General Floral Characters of the San Francisco and Mogollon Moun- 
tains of Arizona and New Mexico and their adjacent regions 
(Januaryoleel S89) pee mitoretbotrcrostemiee ielencvereisi = onic eee 76 
CHARLES SPRAGUE SMITH. 
Iceland,—its History, People, and Scenery (lecture, May 20, 1889), 
WILNOWE MOSER Caer eharcts chin atatae eciatesole seiels oni ais Mere ee settle tere ere 184 
DAVID P. TODD. 
Results of Observations on the Total Solar Eclipse of January 1, 
LS89i(A prill 1889) aestrachoe sce seein cee erie tte te sere ie 1538 
ANTHONY W. VOGDES. 
A Catalogue of North American Paleozoic Crustacea belonging to 
non-trilobitic genera (April 1, 1889), fifle............... eCeaths 152 
