49 



Chart nuiul)er 21 shows the honvly means of the force of vapor for the same 

 time. These, like the curves of relative hninidity, are somewhat irrep^iilar Imt 

 are in fair ai:;reement as to their general form. The daily range in no Cixse 

 exceeds one tenth of an inch and in the t-urve for the mean of tlie fonr months 

 it is almost exactly one half of that amount. 



Talile V contains the mean liarometer and (he mean temperature for every 

 day of Jlanh, June, Heptemher and December ivs obtained from the hourly 

 iil)servatii>ns. 



