[■38] 
Some fiirther Remtrh/ on tbs hifirument propofed by an 
Anonymous Frerijili Author^ for ejfeStwg a perpetU' 
rfn[a6m?^yby t)r. P^apin. M,D; R.lSlS, 
T T iAvittg May iph. 
and ia the NouveHes la R€fuhlque des Letres of the 
Mmih of^m^j that the Author of the Pjerpetual Motion 
is not fati^fiei^^i tnit cfeth endeavour to anfwer the Objecti- 
on that I propounded againft hiscontrivance, in the Philo- 
fbphical Tranfaftions 1685. I 
find I ipuft explain my felf more at large than I did in that 
Paper; butlbegg his pardon if I fay nothing concerning 
the new difpofitiq^ which he fay's might be given to his 
Engine f My want of time makes niie avoid new matters of 
difpute, and I think it enough for me, if I do but fhew that 
his firfl Defcription can never flicceed. 
I ani very fbrry^ that this Author took fo much trouble in 
trying 4hS^-B€Bow§^^^-~^^ Oyl, Mercury, 
Water. I thoijght I had fayd nothing, that might make him 
beleive, thatf did in the leafl qiieition the truth, which he 
int:eaded to .prove ^aipffi n^e , by thofe Experiments; and 
t^tliout dti^ • tfryals rsfcrri'fe thai the 
^MefCfM ia|iiiS;I?4^?^e niuft; foJlpw^ ofthp^piljbri' 
' ^ 'u9^^ B^M^^cid^) but^ the confeqtience ^ which he draws 
frorn timt Erincipk, f^ems to me very groundlefs j for altho' 
. tlie loW&n^cy^pkri^ Bellows be pres't by the; weight of 
^ ijg inches^ pf M^r^ury^fit doth not follow, that all- the parts 
WliiAi^ iitilated higher mbll bare the fanie preHiire f .To 
tJi^ quite contrary, it is plain that the upper part having 
Mermiy above it bears none at all ; the parts that lye in 
the middle 'near the Jxes of the Bellows, bear but 20 inches, 
and 4b all the ^efl" niuft bear tfidr^ oi* left, \ ^icdording as tliey 
lyc higher or lower : It 15 evident therefore, that there are 
a 
