BULBOUS CROWFOOT. 69 
table blisters have been followed by deep, ill- 
conditioned and sloughing ulcers, which were not 
healed without great.difficulty.. Tissot mentions 
an instance, in which an application made to the 
thumb caused a deep, painful ulcer, which pene- 
trated to the bone, and occupied some months in | 
its cure. In another case the blister spread, in 
a few hours, over the whole arm, occasioning 
fever and delirium, and was followed by such a 
tendency to gangrene, that the limb was. with 
difficulty saved. Chesnau, quoted by Murray, 
advises that the Ranunculus, should be applied’ 
to a small surface only, and through a perforation 
in an adhesive plaister, to prevent it from spread- 
ing. From want of this caution, he had known 
extensive inflammation to arise and spread over 
a greater part of the face; neck, and breast.— 
Linnzus, in his Flora Suecica, relates that beg: 
gars, in Sweden, were known to excite ulcerations 
of their feet with the Ranunculus sceleratus, to 
assist them in extorting charity from passengers, 
‘I know not to what extent the efficacy of the 
Ranunculi, externally applied, can be depended 
on. Certain it is that they do not affect: all 
persons alike, and this fact is avowed by those 
who have used them most. I have repeatedly 
made applications of the contused roots and 
