ON NINE BALLOON ASCENTS IN 1863 AND 1864. 227 



Balloon Ascent, from the Royal Arsenal, "Woolwicli, January 12, 1864. 



mometers (free). 



Diff. 



0-3 

 o'a 



o-o 



0-2 



0-3 



2"2 



8. 



Dew-point. 



I4"3 



i8-o 

 i8-o 

 i6*9 



3o'S 

 27-7 

 31-0 

 28-2 



9. 



Gridiron 

 Thermo- 

 meter. 



Dry and Wet Therms, (aspirated) 



Dry. 



Wet. 



Diff. 



Dew- 

 point- 



Hygrometers. 



Daniell's. 

 Dew-point. 



Delicate 

 Regnault's. Blackened 

 ^ Bulb Ther 



Dew-point. 



10. 



11. 



12. 13. 



14. 



15. 



16. 



(G) About entering cloud. 



(8) Out of cloud. (9) 



(11) Ozone =1. 



(13) Can see a circle of trees. 



(15) Cannot see two miles ahead. 



i6-8 

 17-2 

 i8-2 

 i8-2 

 i8-5 



2 1-0 

 2I-0 



22-5 



23-2 



28-5 

 30-5 



37'S 



17. 



(7) In cloud. 

 Cannot tell where we are. (10) Very misty. 



(12) Applied water to the Wet-bulb; forest of pine's. 

 (14) Villages scarce. 



q2 



