404 



Mr. S. H. Freeman on the Question 



Table II. 

 Showing Results of later Series. 



Deflection Defl(?ctioil 

 Liquid. 1 „ „ with 



d, 



D, 



in scale- 



in scale- 



u i evapora- 

 tion. 



dry dish. 



divisions. 



divisions. 





03 



00 





4-030 



37-6 





012 



06 





+0-60 



37-6 





0-8 0-6 





+ 0-2O 



37-6 



Saturated solution CuS0 4 - 



0-6 0-42 



+0-18 



39-6 





0-5 0-21 



+0-29 



39-6 





01 0-21 



-0-11 



39-6 



[ | 0-21 



+0-09 



39-6 





' ! 0-0 035 



-0-35 



39-6 



Saturated solution Nad • 



02 0-1 



o 



4-0-08 



39-6 





04 0-35 



+0-05 



39-6 





1-6 0-6 





4-1-00 



37-6 



Hydrant water • 



1-45 0-6 





37-6 





1-3 0-6 





+0-70 



37-6 



Distilled water 



0-5 06 

 1-0 066 



-010 

 4-034 



39-6 

 376 



Cotton wet with hydrant 

 water 











Sign of ! 



t, 



T, 



W, 



A, 



apparent 



Liquid. in 



in 



in 



in centi- 



charge 





minutes. 



minutes. 



grammes. 



metres. 



of 

 vapour. 





/ 9 



174 



349 



198 



+ 





2 



174 



3-19 



99 



+ 





10 



174 



349 



1482 



+ 



Saturated solution CuS0 4 ■ 



10 



38 



09 



2240 



+ 



1 1 5 



38 



0-9 



695 



+ 



5 



38 



09 



1833 





I 5 



38 



0-9 



2240 



4- 



f 6 



30 



0-54 



525 





Saturated solution NaC'l \ 2 



30 



0-54 



766 



+ 



I 6 



30 



0-54 



3678 



+ 



r 10 



30 



0-59 



318 



4- 



Hydrant water i 10 



30 



0-59 



373 



X 



I 10 



30 



0-59 



454 



Distilled water 



35 



0-89 



3031 



_ 



Cotton wet with hydrant 

 water 



\\ » 



30* 



0-59* 



1029 



+ 

















The actual value of A (the virtual depth of water) for a 

 cloud 1500 metres thick, if condensation began at 

 35°C.,is about 5*9 centim. 

 30 „ „ 4-5 „ 



25 „ „ 3-4 „ 

 20 „ „ 2-6 „ 

 15 „ „ 1-9 „ 



* In this case the rate of evaporation was not measured, but was 

 assumed in computing A to be the same as for hydrant water at the same 

 time. The rate was probably greater, which would make A still greater. 



