(?) 
five force of Congelation, and of highly compreffing Air with- 
out Engines. 
13. Experiments and Obfervations touching the Sphere of 
A&ivity of Cold. ' 
14. Experiments touching differing Mediums , through which 
Cold may be diffufed. 
15. Experiments and Obfervations touching Ice. 
i£. Experiments and Obfervations touching the duration of 
Ice and Snow, and the deftroying of them by the Air, and feve- 
ral Liquors. 
17. Confiderations and Experiments touching the Vrimum 
Frigidum. 
18. Experiments and Obfervations touching the Coldnefs and 
Temperature of the Air. 
19. Of the ftrange Effects of Cold. 
20. Experiments touching the weight of Bodies frozen and 
unfrozen. 
21. Promifcuous Experiments and Obfervations concerning 
Cold. 
ThisTreatife will be difpatched within a very fhort time, and 
would have been fo,ere this. if the extremity of the late Froft had 
not ftopt the Prefs. It will be accompanied with fbme Difcourfes 
ofthe fame Authour , concerning New 
and Thoughts , as alfo, with an Exercitation about the Bo&rine of 
the Antiperifiajis : In the former whereof is firfi propofed this 
Taradox^ That not onely our Senfes,but common Weather-gl .lies, 
may misinform us about Cold. Next , there are contained in 
this part. New Obfervations about the deficiencies of Weather- 
glasses, together with fbme confiderations touching the Newer 
Hermetical Thermometers. LaJilj / 0 they deliver another Tara- 
dox^ touching the caufe of the Condenfation of the Air, and 
Afcent of water by Cold in common Weather-gl afles. The 
latter piece of this part contains an Exarnen of Antiperiftafis , as it 
is wont to be taught and proved .* Of all which there will, per- 
haps^ fuller account be given by the Next. 
An 
