Letters on the Cholera Morbus. Containing ample evidence that this disease, under whatever name known, cannot be transmitted from the persons of those labouring under it to other individuals, by contact—through the medium of inanimate substances—or through the medium of the atmosphere; and that all restrictions, by cordons and quarantine regulations, are, as far as regards this disease, not merely useless, but highly injurious to the community.

** "Letters on the Cholera Morbus" by J. Gillkrest and William Fergusson is a series of letters written in the 1800s arguing against the common idea that cholera could spread from person to person. Challenging old beliefs, the letters share medical proof and observations to show that cholera isn't passed through touch or objects, but that cholera appears to be influenced by atmospheric conditions instead. The writers believe that quarantine rules are not only unhelpful but are also bad for the community, as they emphasize the need for actual, fact-based information about how cholera spreads in order to improve public health. Their arguments are supported by case studies and aim to stop current quarantine practices. **