f I0I2 3 
that the Atmofpbere ftould be every where of the fame 
height. But the laws of Staticks, as to the fubjacent parts, 
be equally prelerved without it, ( the greater altitude 
compeiifating for the levity of the parts,} as when a Por* 
tion of the Sea, is covered with a Fleet of Shi^s ; the 
under parts are equally pre(led,partly by water^and part- 
ly by 5!?//;/, though the tops oix!^^ Ships over fomeparts 
be higher then the furface of the water over others. One- 
ly, infuchcafe, the upper part of the ^/^rwoy^Z'^r^, being 
fluid, may flow collaterally over the other parts on 
either fide if lower. Andfo, atleifurc, if thus remain- 
ing, otherwife indifturbedj reduce it felf to an equal 
height in all parts. Like as the Sea would do, in a per- 
fed: calm3 thoiigh otherwife its waves and billows are 
far from being in all places perfedlly plain and e- 
>yen. 
But however, though the fpring fortified by heat,may 
thus relieve itfelt upward, (yetbecaufe it prefleth every 
way, j it muft endeavour the like downward alfo, ana 
thereby prefs harder on what is under it ; and becaufe it 
will require time to work upward gradually before the 
effed: reach the top of the Atmofpbere; and becaufe, by 
fuch dilatation of its parts, more room is left in the in- 
itervals to receive what is forced: 'tis reafon able to be- 
lieve, that, in fucli cafes, the preffed vapours ( ceteris 
paribus,) may rife more copioufly then when the fpring 
of the ^/r (for want of heat,j is lefs flrong. The ra- 
ther becaufe the fame heat which thus fortifies the 
' fpring of the Jir, doth alfo rarify the Vapours and make 
them lighter; and may alfo fortify the fubterraneal 
heat for what ever elfe it is,^ that drives them up. Not- 
withftanding all which, we have more rains, in winter; 
which fliould argue, that more Vapours do then arife to 
fupply them. 
But I fufped that, in this whole bufinefsCof ftrengthen- 
ing the fpring,) there may be a fallacy put upon us. And 
, ^ what 
