ON NINE BALLOON ASCENTS IN 1863 AND 1864. 



Balloon Ascent, from the Crystal Palace, October 9, 1863, 



219 



Hygrometers. 



Daniell's. 

 Dew-point. 



31-5 



33-5 

 34-0 



36-0 

 38-5 

 40'0 



40'o 



40*0 



41 "o 

 43-0 



4i'o 

 33'o 



10. 



Regnault's. 

 Dew-point. 



4l"o 



Delicate 

 Blackened 

 Bulb Ther- 

 mometer. 



11. 



12. 



13. 



14. 



15. 



16. 



17. 



(4) Sudden dryness. 



% SrthTook^dtr' "^'^"" ^''^'""'^ "'' ^'^'''"^''^ tygrometers after this time. 



