234 



Meteoroloyy of Neic Haven. 



From this formula has been computed the mean temperature of 

 each day of the year, as shown in the folloAving table. 



Mean temperature of every day in the year, as deduced from 86 years 

 of observations at Neio Haven, Conn. 



From this table we perceive that the coldest day of the year is 

 January 21st or 22d, being 31 days after the Avinter solstice. The 

 warmest day is July 24th or 25th, being 33 days after the summer 

 solstice. The interval from minimum to maximum is 184 days, and 

 from maximum to minimum is 181. The mean temperature of the 

 year is passed through on April 22d and Oct. 22d, which dates divide 

 the year into two portions almost exactly equal to each other. 



The ascending and descending branches of the curve of annual 

 temperature are almost exactly similar to each other, as is indicated 

 by the coefficients in the formula, page 233, each of the coefficients 

 after the second term, being less than half a degree. This symmetry 



