In this Historical Paper of Dr. Samuel Hahnemann, he discusses about the Asiatic Cholera epidemic, its signs and symptoms and the role of Camphora in it. It is reproduced here from The Lesser Writings by R.E. Dudgeon for the readers to understand the concept of Homeoprophylaxis.
This pamphlet was published at Gotha in 1801. This was one of the first works of Dr. Hahnemann wherein he discussed the role of Homeopathic Medicines in Curing and preventing Epidemics. In this paper he discussed the symptoms of then prevalent epidemic of Scarlet Fever and how to use Belladona as preventive for it.