Vili TABLE OF CONTENTS. 
On the Genus Fdestus (January 16, 1888) read by title, without 
GOSUACER So xo Ddeicietlineie ore ae we OA Risie eG noe eae eee 100 
Triassic Plants from Honduras (January 30, 1888).................. 113 
The Progressive Development of the Means of Attack and Defence 
inehishes (Ajprils9s 1S88\iouthout Wosizaciasee etek cae sacle ete 163 
Note on a New Species of Rhizodus, from the St. Louis Limestones 
atpAlton, llincis|(AtpriliG; 1888) ses. cenerenerieret sere eee 165 
On the Fossil Fishes of the Erie Shale of Ohio (April 80, 1888)...... 178 
GEORGE E. POST. 
The Races and Religions of Syria and Palestine (April 30, 1888).... 180 
F. A. SAMPSON. 
Notes on the Subcarboniferous Series at Sedalia, Missouri (June 4, 
LBBB) giao ioc eee cis Sue atend el Pech ae aren hal aye eNeasd Hate iviets eventos iiateeleheter 246 
ANDREW SHERWOOD. 
Prehistoric Remains found in Tioga Co., Penn. (February 6, 1888)... 118 
W. LE CONTE STEVENS. 
New Apparatus for Demonstrating the Laws of Reflection and Re- 
Eracwona(Mecensberslc mS8i))tmrieierre ces vciteieh sia) eral reereeite 72 
The Quality of Musical Sounds (May 21, 1888), abstract............ 238 
WILLIAM P. TROWERIDGE. 
A Discovery by C. C. Trowbridge regarding the Purpose of the 
Emargination in the Primary Wing-feathers of certain Birds 
(October 17, SSSI). cis: wie cteum os cws Saini ene om are eee 19 
The Mechanism of Flight in Soaring Birds (December 12, 1887), ab- 
SPACES Ne Sie s widivrocarolos ates bs ee aE Sie iotene Sis elsauers Grr Gee eee 75 
On the Question of Riparian Rights, as applied to compensation for 
water-power impaired or destroyed, when the water of astream 
is taken for public use (March 19, 1888), without abstract...... 139 
A. W. VOGDES. 
Description of two New Species of Carboniferous Trilobites (June 
AGW LSBS)s 2 oes ee ile Siete Ree ister cer opiate NO as Soe Teco hee 247 
C. B. WARRING. 
Genesis! land ats Critiesi(Aprili2 1888) peierrerm tanec oie sis oie sions 141 
Miracle, Law. and Evolution (April 2, 1888)...............0se...005 154 
