( S<^32 ) 
jtn ExtraB of Mr. John Templets Letter of March 30. 1672, t® 
Dr. Walter Needham coneerning the StruUure of the Lungs. 
^ IN AnfwertoiherequeftofanlDgenious Dnof Phy- 
* fick I was lately engaged to give my thoughts of 
the Strufture of the Luags 5 which was as follows. 
1 have formerly fancied j the Lungs to be compofed of a 
multitude of veficles : Into which opicioD I was perfuadfed by 
m^Lmon inioiht Afpera arteria ol Fowls 5 and obferving the 
continuation of many veficles extended from the hronchis 
thorough the aUomen to the anus, (which I conceive to be 
the caufe of the conftant motion of the in fowls ^ the Air 
having ingrefs and egrefs there i and alfo that to be the rea- 
fon why the <i/Ji^/$ of fowls are in maiigoant diftempers ap- 
plied to draw the infedion out of the bo- rhofe anusV hei»^ 
dy I thence conjedured,the fubftance ^j^^cups or Ventou- 
of the LuDgs to be a Complication of a Sl^:^L%(riyt 
multitude of veficles with the fanguinecus ^r.mtunt 
veffelK And in this opinion I thought my :f':Ltn':1lrZ 
felf confirmed by blowing into the Jfpera to have kpcwn fcven 
arteria of Quadrupeds, when I had cut off '^'^'}^'"i^rpriedtotht 
part of the exterior membrane or one lobe thtphgut, that fiuck^ 
of the Lungs, and found the Lungs to rife tiijthcydkd, and the 
with unequal protuberances not unlike JJ^n^edZlt 
bladders. yea^' after, 
But this fecond contrivancej which I am going to defcribe 
to you, hath much fliaken that conjedure* 
March^. 1 I made a ligature about a Dogs neck , and 
opening both the Jugular veins with a pretty large orifice^ I 
let him bleed to death^ (ufing this way to prevent being over- 
charged cither with any quantity of bloud or with b!oud coaV 
gulated • both which would have been hazarded^in cafe I had 
either ftrangled the dog, or cut one or both of the Jugulars 
afunder O Inomediately I open'd th^ thorax, and tying the 
vem cava^mth all thepaflages from the left ventricle of the 
Heart 3 ovxts auricula^ I cut the Lungs w th the Heart and 
A fpera arteria entirely out. To the A [per a arteria I fitted a 
fyphori, long feven inches 5 which I thruft two inches in lengch 
into 
