69 



J Centigrade Thermometer and West Longitude. 



Rodman, ^ 

 Oct. and Nov. 

 1803. 



O 



o 



CO 



^ §1 



CM JO 



p ©JD 



• • 



V 



o 



o CM 



o 



CM CO 



jd 013 



b 



o *0 



CO CTi 

 CM CM 



-d bi) 



EH h| 



b 



o ^ 



CM CM 



-d bi 

 Hhh. 



Humboldt, 

 June and July, Churruca, 

 1799. October, 17B8. 



o P 

 ? o 

 CO o 

 CM — i 



Id ox 



o ^ 



X 

 • o 



CO o 



CM H 



-d ojd 



• 

 • 



O 



• O 



CO CM 

 CM CM 



jQ bJO 

 Hhh* 



o CM 

 CM 

 • o 

 X CM 

 CM CM 



-d bb 

 Hhh. 



o 



o *0 

 CO co 



rH rH 



-C OJ0 



Hhh 1 



b 



X & 



rr rH 



-d oi) 



to 



o ^ 

 o 



O OS 

 <M r- 1 



^3 bJO 



O 



O I-H 



• o 

 CM CM 

 CM CO 



-a brj 



o 



o ^ 



*>o 

 O MS 

 CM ?P 



J=S bJD 



Hh 1 



Quevedo, 

 April and May, 

 1803. 



V 



r— 1 



o rH 



£° 



pp. ^ 



-a be 



b 



o ^ 



b x 



CM CO 

 =G OJO 



o * 

 CM 00 



-d bio 

 HrH* 



o rH 

 CO rH 



CM ^ 

 -G bJD 



o *S 



o 



CO *>» 



CM CO 



-a biD 



xn CO 

 S3 fH 



"S * 

 & 1 



b 



CM 



o o 

 5© X 

 H i— 1 



-a ojd 

 Hhh: 



V 



o 



0 rH 



2° 



01 CO 

 m CM 



OJD 



b 



o CM 



6 co 



CM CM 



~C OJD 

 HrH; 



o CO 



CM SM 

 -a bJD 



V 



o 



o CO 

 X 



CO °* 

 CM CM 



C Chappe 

 Jan. and Feb. 

 1768. 





p b 



CO 



b o 



CM Ci 



-d bjo 



b 



O i-H 



9o 



CO X 

 CM rH 



-d ojd 





• • 



o 



O 

 rH 



North 

 Latitude. 



o 



CO 



o 



O 



CO 



o 



co 



CM 



| 



o ' 

 X 



rH ; 



