Century VIII. 



Comprefionoi Parts , than it hath of it Self: And therefore needeth more 

 Force to be put in Motion. For if a Weighty Body be Penfile, and hang but by 

 a ihreed, the Percufi ion will make an Jmpuljion very near as earily , as if it 

 were already in Motion. 



A Body Over- great or Over -f mall, will not be thrown fo farre as a Body of a 

 ^fiddle Size : So that ( it fcemeth) there mull be a Commenfuration , or /w- 

 f onion, between the Body Moved and the Force, to make it move well. The 

 CV?#/Hs, be caufe to the Impulfion, there is requifite the Force of the 

 afy that Moveth , and the Refinance of the iJodji that is Moved: And if the 

 Body be too greats it yieldeth too little , Andifitbewopw^//, itreiiftcth too 

 little. 



It is Common Experience, that no will prefs or cut fo ftrong , being 



laid upon a Body , as falling , or ftrucken from above. It may be the Aire 

 hath fomepart in furthering the Percuffion; But the chief Caufe I take to 

 be,for that the Parts of the Body Moved, have by Impulfion, or by the Motion 

 of Gravity continued,^ Comprefion in them,as well downwards,as they have 

 when they are thrown, or Shot thorow the Air forwards. I conceive 

 alfoj that the quick loofe of that Motion , preventeth the Ref fiance of the 

 'Body below; And Priority of the Pore e , (alwayes,) is of great L'fficacie • As 

 appeareth in infinite Inftances. 



T/^ismoftinthe5«teofthe Feet, and under the Arm-Holes, and on 

 the Sides. The Caufe is , the Tbinnefi of the Skin in thofe Parts ; j oyned 

 with the Rarenefs of being touched there. For all Tickling is a light Mo- 

 tion of the Spirits, which the TbinneJ? of the Skin , and SuddenneJ? , and 

 RareneJ? of Touch, do further : For we fee, a Feather,ot a ito/lb, drawn alon J 

 the Lip or Cheek , doth tickle 5 Whereas a more G&gjfe , or a f wtffc 

 more Hard, doth not. And for Suddennefl ; We fee no Man can Tickle 

 himfelf : We fee alfo that the of the Hand, though it hath as Thin a 

 Skin, as the other Parts Mentioned, yet is not TickUfh, becaufe it is accufto- 

 med to be Touched. Tickling alfo caufe th Laughter. The* Caufe may be, 

 the Emif ion of the Spirits, and fo of the Breath, by a Flight from Titillation 5 

 For upon Tickling, we fee there is ever a Starting,oi Shrinking, away of the 

 Part,to avoid it ; And we fee alfo, that if you Tickle the Noftrils with a 

 Feather, or Straw, it procureth Sneezing^Nhich is a Sudden Emiftion of the 

 Spirits, that do likewife expell the Moifture. And Tickling is ever Painful, 

 and not well endured. 



IT is ftrange, that the River of iv7/^,Over-flowing,as it doth, the Country 

 o£e,£gypt , there fhould be nevertheless little or no Rain in that Countrey. 

 The Caufe muft be , either in the Nature of the miter ; Or in the Nature 

 of the Aire $ Or of Both. In the Water, it may be afenbed , either unto 

 the Long Race of theater; For Swift Running Waters vapour notfomuc-h 

 as Standing Waters : Or clfe to the ConcoBion of the Water ; For waters well 

 Concotled \apour not fo much, as waters Raw-, No more than waters upon 

 the Fire do vapour fo much , after feme time of Boiling , as at the firft. 

 And it is true, that the Water of Ntlm is fweeter than other Waters in 

 Tafte , And it is excellent Good for the Stone , and Hypochondriacal Melan- 

 choly • Which fheweth it is Lenifying « And it runneth thorow a Countrey of 

 a Hot Climate, and flat, without Shade,eicher of Woods or Hils ; Whereby 

 the&/#rnuft needs have great Power to co/.coH it. As for the Aire, (jrom 

 whence I conceive this want of Showers commeth chiefly,) The Caufe 



P 3 muft 



7*4 



7*5 



Experiment 

 Solitary tou- 

 ch ng Tuilla.il- 



766 



Experiment 

 Solitary tou- 

 ching the 

 Scarcity of 

 %ainc in 

 v£gypt. 



7*7 



