C *60 ] 
regular Gyration, which would hold as long as I 
could well continue the Motion. This feem’d to me 
ftrange, that if I brought the Tube near, and re- 
moved the fame {lowly, no Motion (efpecially in the 
Bottle) was obferved, or what was next to none; 
and yet, that this fudden Motion of the Tube fhould 
produce fuch an EffeCt ; but I think it may be thus 
accounted for : While the Tube is held near the Bot- 
tle, fyc. for any time, the Leaf-Brafs is kept in a; 
State of Repulfion ; and therefore, under that Con- 
finement in the Bottle, is motionlefs but, on my 
fudden withdrawing the Tube, the Side of the Glafs 
oppofite the Leaf ferves as an Attractive to it, while 
the Side on which it lay repels it; and thus, by the 
Motion of the Tube mention’d, there is a conftant 
Succeffion of Attraction and Repulfion. I am, in 
hopes foon to kifs your Hand at Crane-Court , 
I T may be hardly worth while to tell you, that 
I fir’d common Spirit of Wine, at the Diftance 
ot 25 Feet, the Effluvia being convey’d by 3 Per- 
forms and 2 Laths of Deal, ty’d together thus : The 
Tooting , March 20. 
1745-6. 
‘Dear Sir, 
Tour very affectionate Friend 
and obliged humble Servant ,, 
H. Miles. 
IT. 
Dear Sir, * * * 
Perfon 
