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 scientific publication written in the early 19th century. This work consists of a series of letters that discuss the non-communicable nature of cholera morbus, presenting arguments against the prevailing belief that the disease could be transmitted from person to person. The authors aim to challenge existing quarantine regulations and provide evidence based on their medical experience and observations. At the start of the work, the authors emphasize the urgent need for a clear understanding of cholera morbus, particularly in relation to its transmission. They critique the political distractions that have hindered comprehensive investigations into the disease and argue that incorrect data on its communicability can lead to severe consequences for public health. The opening letters outline their assertions that cholera is not spread through personal contact or contaminated materials, but rather, appears to be influenced by atmospheric conditions. They introduce various case studies, including a detailed examination of a soldier's illness, to support their claims and urge for further inquiry into the nature of the disease, advocating for the abandonment of cordon and quarantine measures, which they deem harmful and unnecessary.