five force of Congelation^ and of highly comprcffing Air with- 
out Engines. 
15. Experiments and Obfervsitions touching the Sphere cf 
Aftivity of Cold. 
14. Experiments touching differing-^eJ/V^/^/j through which 
Cold may be difFufed. 
15. Experiments and Obfervations touching Ice. 
16. Experiments and Obfervations touching the duration of 
fee and Snow^ and the deftroying of them by the Airj and feve- 
ral Liquors. 
17. Confiderations and Experiments touching the Vrtmum 
Frigidum, 
18. Experiments and Obfervations touching the Coldnefs and 
Temperature of the Air. 
19. Of thefrrange Effefts of Cold. 
20. Experiments touching the weight of Bodies frozen and 
unfrozen. 
21. Promifcuous Experiments and Obfervations concerning 
Cold. 
This Treatife will be difpatched within a very fnort time^ and 
would have been fo^ere this jf the extremity of the late Froft had 
not ftopt the Prefs. It will be accompanied with feme Difcouries 
of the fame Authow.j concerning New Thermometrical Experiments 
and Thoughts^ as alfo^ with an Exercitation about the DoUrine of 
the Antiperijiajis : In the former- whereof is/r^ propofed this 
Paradox J^h2it[not onely our Senfes^but common Weather-glafleSg 
may mif-inform us about Cold. Next^ there are contained m 
this partj New Obfervations about the deficiencies of Weather- 
glaflesj together with fbme confiderations touching the New or 
H^r^e^/V^/ Thermometers. Lafilji^ they deliver another Para- 
dox^ touching the caufe of the Condenfation of the Air^ and 
Afeent of water by Cold in common Weather-glailes. The 
latter piece of this part contains an Examen o( Antiperijlafs^ as it 
is wont to be taught and proved : Of all which there will^ per- 
haps^a fuller account be given by the Next* 
B 
An 
