BURSATIE. 
99 
features peculiar to itself. Rodent ulcer and epithelioma are 
so much like cancer that they are frequently spoken of as 
cancerous affections, but they differ, and so does “lupus,” 
from bursatie. 
I now proceed to notice, for comparison, some of the lead¬ 
ing features of lupus in man, for which I have referred chiefly 
to the works on dermatology by Mr. Erasmus Wilson and 
Dr. Tilbury Fox. 
Lupus displays three or four forms—bursatie three. 
Lupus Forms. 
(«.) Lupus erythematous , as its name implies, is a form 
of obstinate erythema, with slight loss of substance and no 
signs of elevation. 
( b .) Lupus non-escedens is lupus erythema associated with 
an aggregation of little nodular elevations. Owing to the 
lateral increase of these tubercles a large extent of surface is 
frequently involved. 
(c.) Lupus exedens is characterised by an accumulation of 
tubercles and a destructive ulceration. 
Bursatie Forms. 
(«.) Papillated, circular. Bursatie ulcers may be single 
or plural in number; they occur in isolated spots, and are 
never aggregated together; they are circumscribed and do 
not spread laterally, and are notorious for papillary develop¬ 
ment and for the common occurrence of calcareous nodules 
in their midst. 
(b.) Medium Bursatie Ulcer is characterised by a well- 
developed flat tumour or hard patch, with a very considerable 
elevation of the skin. As a rule, the tumour is single, and 
may pursue two courses, when it becomes deprived of its 
covering; the one is for the tubercular matter to degenerate 
and to be discharged, and in the other case the tumour matter 
may sprout up, ultimately forming a sore with a fungoid, 
irregular, sprouting surface. When the ulcer pursues the 
former course it is then that various attempts at repair 
are seen around the margin, generally at the upper part 
first. 
( c .) The sloughing phagedsenic bursatie ulcer, like the pre¬ 
ceding, is marked by a well-developed flat plate of tumour, 
which, with skin covering it, dies and sloughs out, leaving a 
superficial chasm with ragged, everted, undermined edges. 
In these three forms bursatie shows itself in Calcutta, and 
I fail to see the resemblance to lupus. I have seen a few 
cases of lupus in man, where he disease had extended half 
