(2225) 
ted into the fubftance of the Tefticles (as the moft fa- 
mous Anatomifts have believed 5 ) but that they form, on 
thefidcj another membrane hitherto un-obferved, f alto- 
gether different from the Albugima, znA the two others, 
eaird the Elytroidesy ) which being made up of veffelsj re^ 
fembieth the Meninges of the Brain^ and is by him efteem- 
ed to have the like ufe with it* And thereupon he (hews^ 
that from the Arteries of that Membrane do preceed fomc 
fmall Arteries, for the moft pare double in their origin^ 
but afterwards becoming one, and fo paffing into the fub- 
ftance of the Tefticles 3 but when they are come to the 
center of them, returning to the abdvefaid membrane 
without being accompanied by the veins : Where he ren- 
ders a reafon, why in the fubftance of the Tejluks there 
are no veins^and (hewsjthat in the return of the faid arteries 
there appear fome other fmall vefTels ^ which contain no a- 
liment, but^nly feminal matter 5 and that thefe do frame 
In the midft of the Tefticles another whitifh fmall mem- 
brane , very like the Septum lucidum-^ which membrane, 
receiving vefTcls from all the parts of the Tefticles , ex- 
cept from the back-part 5 does therefore grow crooked 
there, and thereby hath deceived that famous Anatomift 
Dr. Highmore^ perfwading himfclf that it is a round and 
pervious veffel. Moreover he faith, that the Curvature 
of the (aid litle membrane lerveth for a kind of ventricle, 
to purge away an aqueous moifture, feparated, by means 
of the medullar fubftance of the Tefticles, from the femi* 
nal matter contained in the veffeis* He obferveth further, 
that the fmall membrane reftrains it felf towards the upper 
part, and it being fuch an one as confifts of minute veflels, 
there remain yet in that place fome of them, though very 
fmall ones, which may be obferved by a Microfcope to 
be diffeminated ih that litle coat, which paffeth into the 
Jlbigmea near the Pampiniform^ and is inferted into the E- 
pididymis'j whence paffing through a glandul above the 
Epididymis^it there depofeth a waterilh humidity, like that 
which the double membrane brings with it from the cen- 
ter of the Tejiicles.zvid which through the Lymphatic veffek 
Lli 2 i$ 
