( son ) 
N^mi. 87 
PHILOSOPHICAL 
TRANSACTIONS. 
For the moneths o? September and OUober* 
The CONTENTS. 
AnEoitraBof an EpiJlleofDr Langelotj reprefenting^Of what 
great ufe DigeftioDj FermentatioDj Tritore or Grioding, if 
tkey were well regarded^ might be in Chymifiry 5 and proving it by 
very confider able Experiments^ /aid to have been made by himfelf, 
Jn ExtraS of a Letter of ilJr. Lifters, enlarginghis former 
'Notes about Kermes| and withal inpiuating his conjeUure of 
chiudYs being a/ort tf^Kctmts.jiLetterwritten from Florence 
by Mr. The. ^hit^cantaimngdivers remark^able Experiments^ 
there made upon Vipers, fince M, Charas's fieeo^d Reply to Sig^ 
Franc. Red^DoSor Wallis's Anfwer to the BooJ^, entituledLux 
Mathematica, &€f The fame DoBors Additions to what he 
lately publilh' tin his Works DQMotxx^ Mechanice, concerning 
if/;^ Center of Gravity 0/ an Hyperbola. An Accompt of (ome 
books: I. TraUdtusdeVlTA NATVJ{M:&c,Auth,Vt2inc, 
GVGomo^Med.D,^ ?^ d^.c, 11. Jeremi^ Horroccii Opera 
Tofihuma^ una cum Crahtrxl Obfervat, C<ekftibtis, necnon Job. 
Flamftedii de Temporis e^quMione Diatriba^ 0^c, III. Marc* 
Malpighi'r DiffertatioEpifiotica de FORMATION E PVLLltn 
ova \Y.De /yENTE HVMANA Libri^uatmr*^ JuthJ.B. 
du HAMEL. V. A Letter ofVtznctico Redi concerning fome 
Obje^ions made upon his Obfervations about Vipers ; together 
rvithal{eply to that Letter by MoyicCh^ras : now both Prin- 
ted in E?igli/h, VI* De Geramarum Origine 8c Viribos Exe/-^ 
eitatio 5 A. Rob, Boyle :IVon? Printed m latin. 
Fffff An 
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