THE PRINCIPLES OF BOTANY. 
411 
characters the posterior aortic emboli, was evidently permeable ; 
but from the origin of the circumflex to near the commence- 
ment of the femoral artery, its serous membrane was destroyed 
and its canal completely obliterated by the presence of 
fibrinous matter in various stages of organization or 
degeneration. 
The right external iliac artery also contained a fibrinous 
deposit, but not so large as that found in the left one. It 
extended scarcely four inches along the course of the vessel. 
As far as the circumflex ilii it was similar in appearance to 
that in the left ; but beyond this point for about two inches 
it assumed the form of a very coarse rete of well-organized 
fibrine restricting the dilatation of the vessel, yet allowing 
the transmission of blood. It terminated in a reddish-brown 
ovoid clot, enclosed in an organized layer closely adherent to 
the wall of the vessel. The circumflex artery of this side, 
although healthy in itself, contained a loose yellow clot con- 
tinuous with that of the iliac artery. 
The internal iliacs contained a great amount of organized 
fibrine firmly adherent to their inner surfaces, as well as 
several reddish-brown loose clots and many fibrinous bands 
united together and intersecting their canals. These vessels, 
however, were far from being closed by their contents ; each 
having a winding canal of considerable calibre. 
The iliac arteries with their abnormal contents, and the 
distended part of the aorta with its emboli, all together weighed 
five ounces. 
The right lateral, sacral, gluteal, and obturator arteries at 
their commencement, and also the left femoral almost through- 
out, though pervious, contained hands of false membrane 
attached to their inner surfaces and running parallel to their 
long axes. 
The internal plantar arteries in both fore legs and in the 
near hind one were obliterated ; and the internal plantar veins 
in both hind legs and in the off fore one were in the same 
condition. All these vessels had entirely lost their tubular 
character, having become converted into mere fibrinous cords. 
THE PRINCIPLES OF BOTANY. 
By Professor James Buckman, F.G.S., F.L.S., &c. &c. 
( Continued from p. 340.) 
The plants to which we would now direct attention are 
