rpe<^iaTel.y attack the faid Fileings, and they (hall hang dovtrn 
like a Chain from the Iton 5 - nay, if you. apply tfaefe File- 
ings to a Magnet, the Attraftion will be much ftrongen 
Now I am fpeaking of Inclinations, I can't forbear' ac- 
quainting you, ' that I have fcveral times for my diverfi- 
on diflolved Silvfer in'-^^'/^^e fortis^ and as foon as I put the 
Silver into the Mehffruum have endeavoured to obferve 
the operations, and have always fbund a great number of 
Air- bubbles arifing from the Silver, which before they were 
feparatcd from the Metal were as large as a common pins 
head, * or as a grain of Sand. 
Thefe Air-bubbfes, as foon as -they left the Silver, and in 
proportidTi to their nK)'unting tovvard the fuperficies of the 
Water, grew kTs and lefs, infomuch that they did almoft 
efcape ones fight, and prefently after vanifbt entirely, and 
this change happened ufually in the fpace of three Pulfes : 
;Some of thefe Air-bubbles lafted aUttle longer,others again, 
tho as'big as a Pins 'head, burft in pieces before my^eyes, 
"Without leaving oth6r and fmaller Bubbles f part of them- 
felves) behind them. 
For my farther fatisfaftionlin this matter,l prepared a Glafs 
Bottle, whofe Axis was an inch and half large, of the ftiape 
as is delineated by Fig, 4. a, A B C D E F G, whereof A B 
C D reprefents the great Bowl or Globe, and A D E G the 
lefs, and F. the Bore or Orifice of the Glafs. 
This Glafs I placed llopiflg as in the Figure, after that 
I had firll fiU'd it a little above E G with Aqua fortis whilft 
it flood perpendicularly 5 and then I pot into it two grains 
of fine Silver which lay at the bottom of the GJafs, in fuch 
proportion as is e^rpreft in the faid Figure at B. whereby all 
the Bubbles proceeding from tlie Silver rauft afcend perpen- 
dicularly to C 5 with this perfwafion, that when the quanti- 
ty ot Air that was extrafted from the Silver fhould arrive at 
C itwouW remain there, and that in proportion to the 
fpace that the faid Babbles fhould poiTefs there, fo much of 
the Aqiia forik would be protruded from the greater Bowl 
to the kfs. V Now 
