C 89 ) Numb.io^j. 
PHILOSOPHICAL 
TRANSACTIONS. 
July 20. 1674. 
The CONTENTS, 
Bxtra^sof tm Letters^ the one from Monfieur ChriftianHa- 
gens de Zulicheni , touching his thoughts of Mr. Hooks Oh- 
fervations for proving the Motion of the Earth ; the other 
from Signer Caflini, concerning the fame Argument. Brief Di- 
regions how to prepare and Tan Leather^ according to the new 
Invention of the Honourable Charles Howard of Norfolk, 
experimented and approved of by divers of the principal Ma^ 
fiers of that trade ; together with a Defcription of the Engin^ 
for beating and cutting the Materials of tanning. An Extra{f 
of a Letter from MrXifter about Snails, together with fome 
QuaereV relating to thofe Infers , and the tables themfelves^ 
enumerating the various Land and Frefh-water Snails, J Re* 
latio» concerning Women of 60 and 6 h years of ^ge^ giving fuck^ 
to little Children^ An Accomft of two Books i I. Traffatus quin- 
quePhyftco'Medici, de SALB-NltRO & SPlRltU JSll- 
tRO^AEREO, de RBSPlRAtlONE, de RESPlRAth 
ONE FzMtUS in UtERO deMOtUMUS- 
CULARl dr SPlRltlBUS JNlMALlBUS.&de RJ^ 
CHItlDE i Auth.]oh. U2Lyow L.L.D. dr Medici, drc 
IhjmtOME CORPORIS BUMANl, confiripta ah 
Isbr^ndo de Dieiwerbroeck, Med^ ^ Anat. Profeffor^, 
N 
