lo Sir Everard Home on the conversion of Pus , & c . 
believe, entirely different from that which is generally re- 
ceived, I have been desirous that an account of that process 
should, in the first instance, be laid before the Royal Society. 
Description of Plate I. 
Two views of a small portion of a superficial sore on the 
leg, close to its edge, magnified 10 diameters. 
Fig. 1. The appearance the surface put on after it had been 
exposed by the removal of the dressings for 10 minutes, 
none of the parts represented having been visible at the 
time the sore was first exposed, as it was covered with a 
thin core of pus. The appearances since produced are the 
canals carrying red blood; the red points, which are ter- 
minations of perpendicular canals ; and the bubbles of car- 
bonic acid gas. The greater part of the margin is covered 
with a film of inspissated pus which is become cuticle. 
Fig. 2. The appearance the same surface put on the sub- 
sequent day at the same hour, after exposure for the same 
time; showing the progress of the healing process, particu- 
larly the rapidity with which the sore is covered by cuticle. 
Description of Plate II. 
Tw views of a small portion of a superficial sore on the 
leg, magnified 10 diameters. 
Fig. i. The surface represented under exactly the same 
circumstances as in PI. I. Fig. l. 
Fig. 2. The same surface represented lo minutes after 
cold spring water had been poured over it for a few minutes, 
to show the increase in the number of canals. 
