(5^59) 
weight of the Atmofphere was oat coofiderablf enough to 
operate fenfibly upon the reft ( aod of fuch loftaoces 1 
have had opportunity to obferve Qoe or two within tbtie 
laft three daies : ) And therefore 'tis not amifs ^ to poife a 
greater number of Bubbles together^thatsaftertryal made 
of all, the fittcft may be chofeo. Which Advertifemen^ 
will appear the more proper ^ bscaufeof what is to be ad- 
ded in the following Note. ^ 
2. 1 have obferved it fofB-eti-mcs to happeOjthat a Bobble^. 
- that floated when 'twas firft poifcd j would after a while 
fubfide without any maoifeft Caufe , or if it were made to 
fick-.byfuch a caufe, ic would. coDtioue. at the bottom of 
the Water, though that caufe were removed : Which diffi-^ 
cult PboeDomeoon feemiDgtodepeod uppn a kind of Im^^ 
bibition m^de of certain Particles of ao AerealvNature by 
the Water 3 the confideratioo of it beloogs to another 
placejDot to this , where it may fuffice, that the experimtotv ' 
did fometimes a&ually anfwer expediation as that above- 
related, did 5 wherein my main drift was tofhew^that fince^ 
as the Atmofphere is heavier or lighter/tis capable to woik. 
upon Bodies under Water fo as to procure their finliiog,- g.t 
their emerfioo^ ,the Air.(though-a fluid a thoufand time^ ^ 
lighter) muS: lean or prefs upon the Water it felf; by whofe. 
iDterventioD it produces thefe effeds ^ which coafifois what 
ielfe where teach 5 that the Atmofphere is iocumbent as 
heavy Body upon the Terraqueous Globe* . . 
3. Befides the other Circumftaocesj upon whofe aceouod 
ibis Experiment may fail of fuccelig the feafoo of the Ycar^ 
wherein 'tis tryed, may, for ought I know, be coofiderable^ 
For which reafon I ftial! here add this Adv® rtilement^ That ■ 
I choofe^but do not confine my felf, to make my Tryals a- 
bputthe begloDing of the Spriogj as a time wherein oota-^ 
ble alterations of the Air. as well as to Weight, as to other 
fhiogs, are the likelieft to be frequent 
So far this Experiments uhkh upon this occaSon k likely io 
M tmprov\cl unto a kind of Barofcope 5 which ^ togethir with. 
i?».Hygrorcop^g may b§ epcp^._€4er€ lon^ from the fim h(md., 
' ' 4b ■ 
