THE MALPIGHIAN BODIES OF THE KIDNEY. 
79 
Fig. 7- Similar specimens from the Rabbit, but with extravasation into the capsule, 
and at t into the tube also, af \ af. Afferent vessel, c, c. The capsule. 
t. The tube, ef, ef. The efferent vessel, b, b. Its branches entering the 
medullary cone. Magnified about thirty diameters. 
Fig. 8. From the Horse. Two Malpighian tufts springing close together from a 
single terminal twig of the artery. An unusual arrangement, af. Afferent 
vessel. m,m. Malpighian tufts. Magnified about thirty diameters. 
Fig. 9. From the human subject. Two Malpighian bodies injected. The tufts are 
burst and the fluid has escaped into the capsule. In one case it has passed 
also along the tube, the extreme tortuosity of which at its commencement, 
is well seen. a. Arterial branch, af. Terminal twigs, c, c. Malpighian cap- 
sules distended, de. The depression often seen in such cases, at the point 
where the afferent and efferent vessels pass : the latter are not here in- 
jected. t. The tube. Magnified about ninety diameters. 
Fig. 10. From the human subject. This specimen has been chosen because it exhi- 
bits the termination of a considerable arterial branch, wholly in Malpighian 
tufts, and because the several Malpighian bodies injected show different ap- 
pearances of a very instructive kind. a. Arterial branch with its terminal 
twigs. At « the injection has only partially filled the tuft. At (3 it has en- 
tirely filled it, and has also passed out along the efferent vessel ef, without 
any extravasation. At y it has burst into the capsule and escaped along the 
tube t , but has also filled the efferent vessel ef. At ci and s it has been ex- 
travasated and passed along the tube. At m and m (as in fig. 3) the injec- 
tion on escaping into the capsule has not spread over the whole tuft. Mag- 
nified about forty-five diameters. 
Fig. 11. A minute portion of the surface of the human kidney, injected from the ar- 
tery. The injection has burst many Malpighian tufts within the cortical 
substance, and so filled the tubes, the convolutions of which on the surface 
of the organ are here displayed. It has also traversed other Malpighian 
tufts without extravasation, and so filled the capillary plexus surrounding 
the tubes and some radicles of the vein, t, t. Tortuous tubes as seen on 
the surface : these, with their capillaries, cover the surface, so that no Mal- 
pighian bodies appear, p. Capillary plexus surrounding the tubes, as seen 
on the surface, ev. A branch of one of the stelliform veins. Magnified 
about forty-five diameters. 
Fig. 12. From the Guinea Pig {Cobay a). Terminal branch of the renal artery in- 
jected. The injection has burst most of the Malpighian tufts and passed off 
along the tubes, a. Arterial branch. At m are seen a few Malpighian tufts 
partially injected without extravasation. Magnified about forty diameters. 
Fig. 13. From the Parrot ( Psittacus ). Injected by the artery, a, a, a. Terminal 
branches of the artery, af, af, af. Terminal twigs of the artery, d. Dila- 
