From the Richmond Dispatch, 6/6/1862, p. 2, c. 4
Alum Water. – This liquid is said to be admirable for dressing gunshot and bayonet wounds, having a tendency to keep the wound free from inflammation, and being remarkably soothing. It has been applied with great success to all the patients in the hospital established by Captain Alexander in the City Arms Hotel, on 15th street. It can be procured fresh and cool, in any quantities, from wells at Jno. B. Davis's stable, Franklin street, and at McDaniel's jail, known as Castle Godwin.