"Summer diarrhœa, cholera, and typhus fever [local miasmatism]"
(7 August 1846): 227-35
PDF from photocopy, courtesy of the Taubman Medical Library, University of Michigan.
Laycock describes "the fever as seen in York" (228).
With respect to cholera, he offers the contingent contagion argument that "infection is not absolute under any circumstances; it is always conditional . . . as regards the recipient . . . the state of health of the organization that receives it, or even of the organs for which it has an elective affinity . . . [and on] the topography of York . . ." (234-35).