APPENDIX. 277 
cr than the fmall empty Space in the Tube 
which was fixed to the Viol, which was 
wanting to be filled up with Beer, and which 
Vacancy was in a great Meafiire occafioned 
by the W'afte of Beer, which was made by 
the Froth of the Bubbles, which flowed over 
the Mouth of the Viol. Whence it is evident 
that this Air cakes up much more Space than 
when interfperfed in the Liquor. And in 
Lowthorfs Abridgment of the Philof Tranf^ 
V* 2. p. 219. it was found that on exhauPcing 
the Air Bubbles out of Water, the Bulk of the 
Water was fcarce fenfibly diminiflied. Yet it 
cannot hence be inferred that the Air was not 
in an claftic State while in thefe Liquors. 
That there is elaflic Air in common Water 
is certain from hence, viz. becaufe when fro- 
zen to Ice, the Air Bubbles are then by the 
uniting of many of them together, become 
large and vifible 5 yet Cold as kis well known 
does not increafe but conftantly Decreafe the 
Expanfivenels of elaflic Air. 
8. Some have attributed the Expanfion of 
Ice in freezing to the large Colieftions of chde 
Air Bubbles, which are not to be Icen when 
the Ice firfl: freezes, but are obferved daily to 
increafe in Bulk more and more j yet the Air 
T 5 in 
