Ohsetvations made during a Voyage to India. 177 



Ilesidts of a Series of Experiments on the Temperature of the 

 Sea^ made hy J. H. Pratt, M.A., on board the ship Diilce 

 of Buccleugh, bound for Calcutta. 



The experiments were begun on the east of the Cape. 





Lat. 



Long. 





Temperature. 





Day. 









1 



flpHPTflJ T!pTTi;ivTfQ 



at noon. 



at noon. 



xiuur* 



Sea. 



Air. 



V^cllcltll IVCillal AS* 



1838. 



/ 



/ 















Nov. 17. 



37 37 s. 



20 40E. 



11 p.m. 



69'-25 



66 





18. 



37 40 



24 14 



lOi 



64-25 



64-25 



Clear sky. 



19. 



37 54 



28 30 



9 a.m. 



65 



68 



Clear. 









10^ p.m. 



69-25 



64-50 



Cloudy. 



20. 



37 46 



33 42 



8 a.m. 

 3 p.m. 



63-75 

 64-75 



59 

 61 



Clear. 









11 



69-75 



62-50 



Clear (starlight). 



21. 



38 11 



37 51 



7 a.m. 



68-25 



64 



Clear. 









9 



68-25 



64-25 



Clear. 









noon. 



66-25 



64 











2 p.m. 



64-50 



64 50 



Clear. 









5 



62-50 



62-50 



Violent squall. 









7 



62-50 



57 



Immediately after 

 heavy rain. 









8^ 



Q2 



58 



J) bet. squalls. 









10 



62 



58 



Cloudy. 









midaight. 



62 



56 



Starlight. 



22, 



37 55 



42 20 



5i a.m. 



n 



9 



10^ 



67 



67-25 



67-25 



68 



58 

 58 

 58 

 59 



Cloudy. 









noon. 



67 



59 



Clear. 









2 p.m. 



654 



59 











5 



59-75 



61-50 



— "I Sea became 









7 



58 



59 



— I remarkably 









9 



55-25 



55-25 



— J green : pass- 

 ing through 

 comp. shal- 

 low water. 









11 



62 



58 



Clear. 



23. 



37 46 



47 4 



4 a.m. 



7i 



65-25 

 64-50 



59 

 60 



Clear. 









9 



63-50 



59-25 



Cloudy. 









11 



63 



62 



Clear, 









noon. 



63-50 



61-75 











2-1 p.m. 



63-50 



64-50 











4| 



63-50 



64-50 











7 



63-50 



64 











81 



63 



63-50 



Cloudy. 









lOi 



63 



63-50 











lU 



63 



62-50 





24. 



38 14 



51 50 



7-.J a.m. 

 9 

 10^ 



64-75 

 63-25 

 63-25 



64 



64-50 



65 



Cloudy. 



1 





124 p.m. 



63 



65-50 



Clear. 



Phil. 



Mag. S. 



3. Vol. 16. No. 102, March 184^0. 



N 



