226 PATAGONIA. May, 1834. 



shot down the stream with great rapidity, generally at the 

 rate of ten knots an hour. In this one day we effected what 

 had cost us five-and-a-half hard days' labour in ascending. 

 On the 8th, we reached the Beagle after our twenty-one 

 days' expedition. Every one excepting myself had cause 

 to be dissatisfied; but to me the ascent afforded a most 

 interesting section of the great tertiary formation of Pata- 

 gonia. 



