CS3) 
of the Piiblilher of thefe Papers to cenfure any Books,that are 
therein taken notice of; he only craves leave to fay thus much 
of the Piece he hath now given an account of 3 That fome very 
Learned and Able men,who have perufed the fame^though they 
acknowledge it to be very ingenious,and containing more fpe- 
cious Objefiions and Experiments againft the Maintainers of 
the Weight and Spring of the Air,than have been produced hi- 
therto ; yet they declare vvithal!,that fuch Objefiions feem not 
cogent to them, and that the Experiments alledged to the 
contrary, may be folved by the very Hypothejts impugned 
by this Author. So that we £hall leave it to fit Rea- 
ders to Judge, whet her there be not already faid enough by the 
Honourable Robert Bojfte (to name here no others) in his Fhy- 
Jico'Mechamcal ExferimentSyhoth the Jir^ Treatife^zwd thtCon- 
timation , as alfo in his jinfveer to Fr, Lims,zx\d^ in his New 
Experiments about the PreJSure and Spring of Air upon Bodies 
under vcater \ :jLndlikGwir€ in his Hydrojiatical Letter^ diluci- 
dating an Experiment of weighing water in w^^^r, printed with 
the fame new Experiments againft Mr. George Sinclair ? And 
whether thofe real and vifible things,by which it appears,that 
fuch a Caufe being put, fuch an EfFeft follows, and the fame 
Caufe being removed, theEffed alfo ceafeth, be not indeed 
more fatisfaftory , than di funiculus ex fubtilibus Mercuri- 
alibus effluviii contextm^ faftning the Mercury to the Tube as 
far as *cis void thereof. - 
ir. A MJTHEMJTICJL COMPENDIUM, coUeBed 
out of the Notes aM Papers of Sir ]ot\zs Moore by Nicholas 
Stevenfon. London, 1674. 
THis well-ftored Pocket-book contains abundance cf 
llfeful Pradicesin Arithmetick,Geometry, Ailronomy, 
Geography, Navigation, Embattehng and Quartering of Ai- 
mies, Fortification, Gunnery, Gauging and Dyalling^ ex- 
plaining alfo the Logarithmes with New Indices; Nepxirs 
Rods^ 3 making of Movements, and the Application of Pendu- 
M 2 iums ; 
