Kidney ! . 
t 
( 94 ) 
after difcharg’d from the Arteries ^ and a confiderable Branch of 
a Nerve furnifh’d to it : So the Kidney being a Vtfctu where there 
is a vail Separation of Serum required, thefe Renes Succenturiati 
feem to be defign'd for furnifhing a new Supply of Spirits to the 
Venal Blood, after it has paffed the Kidneys, and undergone this 
Secretion. Both which Ufes I doubt not may appear from their 
Structure, as you have it at large declared by thofe accurate Ana- 
tom iils, who have flour ifh’d in this Age. 
I he Kidneys were of a large and proportionable flze, being 
one Foot in length and i Foot 'in breadth of the ufual Figure^ 
much like that of a Man \ their external Surface fraooth, and 
equal with their external Coat, clofely adherent to the inner Sub- 
ftauce, without any perfpicuous Lobes to be feen externally ; but 
when I open’d one of them, I perceiv’d 6 large Caruncult Vri- 
narij. Its Subftance was very obvious, and correfpondent to the 
Strudure ufually obferv’d in the Kidneys ; i. e. the Glandules 
Subftance externally was very confpicuous, for the fpace of about 
i Inch in Circumference j then began to appear the TubuliVri- 
narij , firft fmaller and lefts obvious ; then another Series larger, 
and a third ftil! larger, till they began to furround each of the 
Caruncnli , like fo many Rays of the Sun. I had no Affiftance 
of Microfcopes, (for 1 open’d it in the Field on Monday ) and 
therefore did not fee fo clearly the Coalition of the fmalJer7Vi. 
bull into the larger Duds : But as it happens in all thefe Excre- 
tory Vefftels, they did not appear branched and divaricated, as 
Blood Vefftels ufually are; but continued parallel to each other, till 
from the leffter to the greater, they at laft emptied themftclves 
into the common Receptacles. I am not pofitive, whether there 
was one common Ureter, into which all the fix Carnnculi did 
empty themfelves, or if each had a particular Branch of an Ure- 
ter, into which they were diftcharg’d •, only I remember I ftaw 
no Pelvis , which for the moft part happens where the Carnnculi 
are very large. The Reafon of my uncertainty about the Ureters 
is,- that after I caus’d the Thorax and Abdomen to be open’d on 
the Saturday, I let alone the Kidneys till the Monday • but they 
being involv’d within a Dupiicature of the Peritoneum, and no Fat 
furronndingthem, that Membrane was fo dry’d up and ft iff, that, 
even the Butchers Knives were fcarce able to pierce it : So that 
requiring the help of a Butcher, whoaffifted at the Excarnating 
of the Bones, he took out the Kidneys without any regard to 
the Vefftels ; for th js Rents Succenturiati were luckily taken out the 
Day 
