TABLE OF CONTENTS. 1X 
LECTURES OF THE POPULAR LECTURE COURSE OF 
1887-1888. 
FRED. H. CHAPIN, 
Ice and Rock Scenery in the Front Range, Colorado (May 28, 1888), 
ODUAVOOE UOTTROG isn Soot bo ono Doh od eenc oo bobeEn achoso oo Goo bood ey 243 
P, H. DUDLEY. 
The Panama Railroad and the Interoceanic Canal now under con- 
struction (March 15, 1888), without abstract. ........-....005. 135 
GEORGE E. POST, 
The Physical Geography and Geology of Syria and Palestine (April 
DROS) Seach ony ketare) taetatars.oictes ot CreveVenito @ @ afeyctwlataisintels efeiol stoma) aici slave 166 
W. LE CONTE STEVENS. 
The Development of Aeronautics (January 23d, 1888), without ab- 
PET ELC LA e Torey sroieia che wl ser atsicn a cco er eisro ete. of oh ocsr shoketoregal ee aveieranevene apare Orsini ee 113 
