BIGELOW: EXPLORATIONS IN THE GULJ OF MAINE. 



47 



One day, August 21st, throws light on the diurnal warming~of the 

 cold coast water between Mt. Desert and the mouth^of Penobscot 

 Bay. The hourly diagram (fig. 6) shows that there was^only about 2° 



6 7 



A.M. P.M. 



9 10 II 12 I 2 3 4 5 6 7 8 9 10 II 12 



64° 



63 



62 



61 



60 



59 



58 Y 



57 



56 



55T 





















































































\ 

























































►- — -i 



> — -< 



— 



► — -< 











\ 







































































































\ 





















/ 















, 



* — 



1 1 1 





/ 





























V 



































1 



Fig. 6. — Air and surface temperatures, August 21, 1912. 



AM PM AM 



6 7 8 9 10 II 12. 123456789 10 II 12. 1234567 



67 



66 



65° 



64 



63 



62 



61 



60" 



59 



58 



57 



56 



55' 



5+ 



53 



52 



51 



50° 























\\ 















i i 















/ i 















/ 















/ 













/ 















z 















/ 















! 





'. 











! 





', 







\ 









', 









x: :, 







\ 





















































\ 



\~ 













\ 



z^ _ 



\ 













3 - 



\, 

















- 



Fig. 7. — Air and surface temperatures, August 6, 1912. 



