Public Domain Mark
You can use this work for any purpose without restriction under copyright law. Read more about this licence.
Credit
Did the General Board of Health make any scientific researches at the bedside to ascertain the connection which exists between epidemic diarrhoea & epidemic cholera : and were they the first to point out that cholera is invariably preceded by a diarrhoea for a few hours, or a few days, or for a few weeks, and that it is, consequently, in the power of human foresight to ward off an attack of cholera? : a letter addressed to John Simon, esq., F.R.S., Medical Officer to the General Board of Health / by David Macloughlin. Public Domain Mark. Source: Wellcome Collection.