Chase. 



264 



[September. 



Tables III and IV are constructed from Prof. Coffin's reductions 

 of the extensive meteorological observations made under the direc- 

 tion of the United States Patent Office and the Smithsonian In- 

 stitution. 



Table V presents various comparisons between the thermal dis- 



Table I. — Ratios of Average Daily Fluctuations of 

 Temperature. 



* Sabine. 

 *> Blodgett. 



^ Kaemtz. 



* Biiche, 1842-4. 



• Loomis 

 f Guyot. 



