IV CONTENTS. 



Descriptions of local sections across the Isthmus of Panama — Continued. Page. 

 Section on Panama Railroad from Monte Lirio to outcrop of Gatun forma- 

 tion on south side of Big Swamp 542 



Section showing Gatun formation, one-quarter to one-half mile from Camp 



Cotton, toward Monte Lirio 542 



Large railway cutting a quarter of a mile from Camp Cotton toward Monte 



Lirio 543 



In the next two exposures going toward Camp Cotton 543 



Section in cut one-half mile west of Camp Cotton toward Gatun 543 



Generalized sections of the bluffs exposed along the Panama Railroad, re- 

 located line, about 3,500 feet south of Gatun railroad station 543 



Section from top of hill at western end of Gatun dam to bottom of the spill- 

 way 543 



Section at west end of the spillway 543 



Exposures in the vicinity of Mindi Hill 544 



Monkey Hill, Mount Hope station 544 



Section of bluff at end of Toro Point 544 



Section one-third mile south of southern end of Toro Point Breakwater, in 



quarry 545 



