66 



So 



PQ 



Mean temperature 

 of the air in the 

 | basin of the seas. 



O 

 o 

 O 



o 



Gi 



Ph rej £ 



J * s 



CI 



*** 3 



C ee w 



Observers. 



Churruca 

 Quevedo 

 Perrins 

 Humboldt 

 Perrins J 



Humboldt 



Quevedo 



Perrins 



Chappe 1 

 Churruca 



Perrins 



Quevedt) 



Humboldt 



Williams 



Franklin 



Williams j 



Period of the 

 observation. 



Nov. 1788 

 April 1803 

 March 1800 

 Febr. 1 803 

 May 1800 



Oi so O co co 



O) O O CO CO 

 N00 CO NN 



a;^ g . o 



a ^ as d -g 



O co Oi CiCO O 



OOOJOONOl 

 CO CO N N N 



Temperature 

 j of the Ocean. 



o* i>- ^ c ^ 



co r*- 



GQ Gl Gl 0? Gl 



O CO NCO 



o A.o w 



GJ GJ ©i Gl Gl 



2h !>• «0 GO 



«0 G» >h 



I— 1 r— 1 — < r-H i— t »— ' 



Longitude. 



> -h o 



GO >— < GJ ' ""^f 



o 



N O 'H H 



01 CO Gl CO *0 



£££££ 



CO o ^ r-^ 



CO Gl r-H 



O OJCO l> CO 

 GJ CO G* i rH 



">h N N N O CO 

 G? ^ ^ H 



i GO rji «f ^ 



r— ' GO — 1 CO r-f 



. Latitude. 



t/i c/i c/j £i £i 

 go oo ii oo 



*0 CO '— < i 



6 o o o o 



- ^ 



0 



•O ^ N CO 

 Gl G^ Gl G^ ©1 



££££££ 



O CO 00 GO h 

 GO ^ OVJ H H 



G? GO GO CO 



■^j" 1 *^ 



\ 



