44 



Mr Foggo oti the Dew-Point Hygrometer. 



These tables contain all the temperatures likely to occur in 

 this climate. 



Table of the force of Vapour^ and weight ingrains of a cubic 

 foot of Vapour at different Temperatures from 5* to 80*' Fahr, 



Table of Corrections to be used when the term of deposition 

 differs from the temperature of the air. 



