TABLES OF DIFFERENCES OF MEAN TEMPERATURES AT DIFFERENT HOURS OF THE DAY 

 FROM THE DAILY MEAN, FOR EACH MONTH AND THE YEAR. 



INDEX TO STATIONS. 



[Arranged according to latitudes.] 



1. Van Rensselaer, North Greenland ....... 1853-55 



2. Port Foulke, North Greenland . . . . . . ' . . 1860-61 



3. Melville Island, Arctic America . ....... 1819-20 



4. Port Kennedy, North Somerset 1858-59 



5. Boothia Felix, Arctic America ........ 1829-30 



6. Sitka, Alaska Territory ......... 1857-64 



7. Montreal, Canada East ......... 1839-41 



8. Thunder Bay Island, Lake Huron, Mich. ...... 1863-65 



9. Toronto, Canada West ......... 1842-48 



10. Mohawk, N. Y. 1860-69 



11. Cambridge, Mass. .......... 1841-42 



12. Amherst, Mass. .......... 1839 



13. New Haven, Conn. .......... 1779-186 



14. Brooklyn Heights, N. Y. . . . . . . . . . 1847-49 



15. Frankford Arsenal .......... 1836-37 



16. Philadelphia, Girard College ........ 1S40-45 



17. Washington City, Capitol Hill, D. C. 1841-42 



" Washington City, U. S. Naval Observatory 1862-69 



18. Fort Morgan, Mobile Point, Ala 1848-50 



19. Galveston, Texas ••••...... 1851-53 



20. Key West, Florida .......... 1851-52 



21. Rio Janeiro, Brazil .......... ? 



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