236 THE VOYAGE. .ETAT. 23. [1832. 



Yellowish green, dark brown, and red, were the prevailing 

 colours ; this fact appears to be new, as far as I can find out. 

 Geology and the invertebrate animals will be my chief object 

 of pursuit through the whole voyage. 



We then sailed for Bahia, and touched at the rock of 

 St. Paul. This is a serpentine formation. Is it not the only 

 island in the Atlantic which is not volcanic? We likewise 

 stayed a few hours at Fernando Noronha ; a tremendous surf 

 was running so that a boat was swamped, and the Captain 

 would not wait. I find my life on board when we arc on blue 

 water most delightful, so very comfortable and quiet it is 

 almost impossible to be idle, and that for me is saying a good 

 deal. Nobody could possibly be better fitted in every respect 

 for collecting than I am ; many cooks have not spoiled the 

 broth this time. Mr. Brown's little hints about microscopes, 

 c., have been invaluable. I am well off in books, the ' Dic- 

 tionnaire Classique' is most useful. If you should think of 

 any thing or book that would be useful to me, if you would 

 write one line, E. Darwin, Wyndham Club, St. James's Street, 

 he will procure them, and send them with some other things 

 to Monte Video, which for the next year will be my head- 

 quarters. 



Touching at the Abrolhos, we arrived here on April 4th, 

 when amongst others I received your most kind letter. You 

 may rely on it during the evening I thought ol the many most 

 happy hours I have spent with you in Cambridge. I am now 

 living at Botofogo, a village about a league from the city, and 

 shall be able to remain a month longer. The Beagle has gone 

 back to Bahia, and will pick me up on its return. There is a 

 most important error in the longitude of South America, to 

 settle which this second trip has been undertaken. Our 

 chronometers, at least sixteen of them, are going superbly ; 



none on record have ever gone at all like them. 



A few days after arriving I started on an expedition of 



1 50 miles to Rio Macao, which lasted eighteen days. Here I 



