On the Navigatwii of the Mar anon or Amazons. 49 



who do not possess it, but a South American is now no longer 

 ashamed of owning his country. 



Perhaps, upon the whole, the animosity that exists between 

 the Brazilians and Portuguese is not so vehement in the province 

 of Para as in other parts of Brazil. 



I cannot close this paper without remarking, that on my re- 

 turn from my expedition down the Maranon, I presented near- 

 ly fifty specimens of natural productions, &c. to the Adelphi 

 Society of Arts, Manufactures and Commerce. They were, it 

 is true, little more than rubbish, when viewed in any other light 

 than that of specimens, but they were specimens, and as such 

 had been collected by me with no small trouble. Whether the 

 Adelphi Society have examined them, they can themselves best 

 state ; whether my specimens from the Maranon were beneath 

 their notice, subsequent events will probably prove. They have 

 been civil, and have bestowed upon me one of their silver 

 medals, for what they are pleased to call a " pigment ;"" but 

 when I last inquired, several of the specimens of natural produc- 

 tions were said to be still " unknown."" — Your obedient servant, 



H. Lister Maw, Lieutenant R. N. 

 Athek^um, London, 

 September 24. 1831. 



Remarks on Thermal Springs^ and their Connexion with VoU 

 canos. By Charles Daubeny, M. D. F. R. S., Professor 

 of Chemistry in the University of Oxford. Communicated 

 by the Author. 



UuRiNG my residence at Geneva in 1830, I communicated to 

 the Natural History Society of that city, which had done me 

 the honour to enrol me amongst its members, a brief statement 

 of some observations which I had at different times made, re- 

 specting the disengagement of azotic gas from various warm 

 springs. 



Although the memoir alluded to has since been inserted in 

 the Bibliotheque Universelle, and has from thence found its way 

 into Boue's Journal de Geologie, yet, as no notice has been ta- 



OCTOBEK DECEMBER 1831. D 



