754 INDEX. 
'E 
Unerystallized Films, on the Action of, upon Common and Polarized Light, 607. ~ 
Vapour Density of Volatile Liquids, on a Mode of taking the, 441. 
W 
Wanxtyn. (J. A.) Ona Mode of taking the Density of Vapour of Volatile Liquids at Tempera- 
tures below the Boiling Point, 441. 
END OF VOLUME TWENTY-SECOND. 
EDINBURGH: PRINTED BY NEILL AND COMPANY. 

