( i8o ) 
imprcffion. Befidesto anfwer one fimilitudie with ano- 
ther^ we may dbCttvtthztthe Fi^w of thofe Mufclcs that 
ixmd the legi and bear-upon the W of the knee,feem more 
//m^^ and vigorous in their action then the Cf>;2^r^S(?rj' that 
run in i\\t hollow under it / and this was admirably contriv'd 
by the Wifdon^ of mv great Author (and may be unanfwer- 
ably objefted to the followers of Epicurus^ who fay the 
parts of the human body were made without any defign :) 
for fince thofe ExtendingMufcksofour /-^j^/ are much pent 
up and hindred in their a£tion by the poftureof the Child 
ki the Womb (which lies with its knees up to its mouth,) 
that defeli is excellently compenfated by the natural tmfioti 
and pofitioii of the faid Fibres^ or elfe M^;t could never go 
upright. 
6. It has been urg*d That the afSlion of Vifion was unu 
formy and therefore requirM an uniform tetifion oi all the Fi- 
bres. To which I anfwer, that tho in the view of the intire 
GbjeB^ or its place by both eyes, it oughttobe fo^ and 
that therefore^ it was done by correfpondsnt Fibres ("as I have 
formerly eKplarn^d) i yet in ^ ftri£tervieWofif&/?^r^x of the 
fame Objedi: by one there is a ;difcrimination. For 
to inftanee in a body of the'moft fimple figure and colour, 
(as fuppofe a Globe all red^ or of Fire) that fhould be feen by. 
me Eye only> 'cis certain i^he Eye diftinguiftiesthe different 
^arts in iWit extra^pofimmy' or diftin^t fituations in rcfpe<!i- 
of Mone another , tho they be all of ^-piece as it were other- 
wife; ind unltfs ft were fp, I fee no reafon vfiiy that red 
Globe fhould not appear only one redfpeck^ Or a Globe of 
fire as a lucid point : Now this dijlingiii/bing of the parts is- 
cafily conceivable to be- dbm bf th6^^^ord Ftbr£s^f the. 
fameEycw^' '''^ ■■■ '^w'li^^l-yicn.y-^^^i^-^^^ ^j^rf; ^'n'^'- 
7. Laftly it has-been urg'd It bat the Fibfei of the Choroei-' 
dcs feem more adapted to Vifion then^^o/^ofthe7(f^^W, 
becaufe thefe laft did not pfiere j^ecies {to ufe their phraie) 
as tranfmitting the colours , of the tprmer > and be/ides fome 
Blood- veffels running amongfl em would interrupt the 
'■••^^^ ^ ^ A image i > 
