66 



S 



So 

 * <o 



CO 



_ 8 

 CO O 



So 



2* 



«4> 



Mean temperature 

 of the air in the 

 basin of the seas. 



c 

 o 



O 



o 



©* 



1 



Ph -d _2 



« * g 



©J 





Observers. j 



Churruca ^| 



Quevedo 



Perrins 



Humboldt 



Perrins 



Humboldt ^ 



Quevedo 



Perrins 



Chappe 



Churruca 



Perrins i> 



Quevedt) 



Humboldt 



Williams 



Franklin 



Williams j 



Period of the 

 observation. 



iNov. 1788 

 April 1803 

 March 1800 

 Febr. 1 803 

 May 1800 



June 1799 

 April 1803 

 March 1800 

 Jan. 1768 

 Octob. 1788 



O CO oo co co o 



O O O!Q0 NO) 

 CO CD !>-!>• i>- !>• 



Temperature 

 of the Ocean. 



o 



©J l>. t> O v rH 



N N N 00 N 

 GJ ©J ©J ©J ©J 



p cp ^ CO «0 



O O co 

 ©f G* ©1 ©1 ©1 



2-i oo wo CO 



>o ^ ©» >b 



Longitude. 



^ ■— 1 O «0 ©* 

 GO rH ©1 — i ^ 



O —* ^ *•* 



03 GO ©1 X 



£££££ 



co nft o ^ n 



CO wo GJ h 



'O O0 CO CO 

 ©J co ©» *- — i 



"*0 N N N O 00 

 ©» ^ pi 



a 



W0 rH CO ^ ^ 



*-> CO —i CO rH 



Latitude. 



cz3 o6 in 55 £ 



GO GO r-H CO 

 «J »fj fif) H. rH 



6 o o o o 



£££££ 



«^ OJOiO N 

 - Gl 1* ^ 



0 



•O »0 >0 NCO 

 G? ©I ©I ©I ©J 



r^H ^5 ZJ IZj ^ 



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 CO — < >0 >0 <-i 



©1 CO GO *© X 



^J* ^? 



1 



