Table 5 gives, in the second column, the average temperature 

 for each month for the period of 24 years (1869 to 1892, inclu- 

 sive), and in the third column the average temperature for 35 

 years (1869 to 1904 inclusive), also the highest and lowest 

 mean temperature during the whole period (1869 to 1904) : 



TABLE 5. Mean and extreme monthly temperatures. 



VAPOR TENSION AND RELATIVE HUMIDITY. 



In Tables 6 and 7 are given the vapor tension and the relative 

 humidity at 7 a. m., 2 p. m., and 9 p. m., for 1869-1875, inclu- 

 sive. From 1869-1875 the relative humidity was recorded at 

 7 a. m., 2 p. m v and 9 p. m., and the mean taken. 



The hygrometer used throughout was of the Huddleston 

 type and was made in Boston, Mass. 



