TOE ISTHMUS OF PANAMA. 135 



sang sweetly. Great numbers of land-crabs started 

 for their hiding-places as I approached, and it wts 

 curious to see with what facility they would scramble 

 along, one way as well as another, enjoying the 

 happy faculty of getting through the world without 

 being obliged to turn around. They excavate deep 

 holes in the ground, or seek out crevices in the coral 

 rocks, where they usually remain during the dsy. 



The temperature of this climate is remarkable 

 for its regularity, seldom varying over fifteen de- 

 grees from one year to another, and 89 has been the 

 highest degree indicated on the meteorological tables 

 kept by Dr. J. A. Totten, surgeon of the station at 

 IS'avy Bay, during the year 1851. 



