APPENDIX. 309 
from forty (even to fifty feven Degrees. 
61. Spirit of Nitre, mixed with an equal 
“ Qiiantity of Spirit of Vinegar, there was 
fcarce any vifible Commotion, yet the Heat 
‘‘ arofe from forty fix to fifty four Degrees. 
61. The fame Mixture in vacuo had a 
fmall Commotion during its Mixture, and 
“ acquired a Heat from forty fix to fifty fix 
Degrees. The Mercury in the Gage did 
not ftir. 
Spirit of Nitre, with half a Dram of 
‘‘ Crabs Eyes mixed, made a confiderable 
frothing EfFervefccnce, whereby the Hear 
was increaied from forty fix to fifty four 
Degrees. 
64. The fame Mixture did in vacuo make 
^Va great frothing Effervefcence, four times 
“ greater than the former, its Heat was raif- 
ed from forty fix to fifty fix Degrees, they 
were wholly diflolved in both Cafes. 
“ 6'5. Equal Quantities of Lemon-juice 
and Spirit of Nitre, caufed no vifible Emo- 
tion when mixed, and tho* the Spirit of 
Nitre funk inftantly to the Bottom, the 
Lemon juice fwimming on the top, yet the 
Heat increafed from forty fix to f De- 
grecs. 
X J 
66 , The 
