102 



Dr. Masons Description 



Experiment 3rd. 



Barometer 30 inches. 

 Temperature in shade 60*0 correction 



Temperature of wet bulb 56-5 dif. 3-5 + 583 x 2=8°- 166 



absolute dryness on the thermometric scale, 



absolute dryness. 

 Temperature of shade 60 — 8*166=51-834 dew-point. 

 Temperature in shade 60 — 4-083=55*917 lowest limits 



of refrigeration, corresponding to a tension of -45638 

 Ascertained dew-point 51° Fah. 



Temp, in shade. Force of vapour. 



10 



■00442 + difference. 



In these experiments it will be seen that the mean tension 



