CHOLERA: THE GEOLOGICAL THEORY. BY JOHN LEA, ESQ. Reprinted from the Western Lancet, Cincinnati, April, 1851. Citizens of Cincinnati, and of the west generally, have a special -interest in all discussions and investigations touching the origin, nature, and progress of cholera ; and it appears to me to be the duty of every one, who has it in his power to correct mis-conceptions and mis-statements, or to adduce new facts, through that medium which he thinks may prove most beneficiaHo afflicted humanity. The report of the committee on epidemics, of the “ Ame- rican Medical Association” (which met at this city in May last), on this very interesting subject, does not appear to have thrown any new light thereon, or adduced any new or remarka- ble facts in relation thereunto, (“ upon which no one sheds new light.” ReporTp. 106.) On page 129, of the Transactions, the committee says: ii we believe that cholera is portable, but not contagious, that it is dependent for its accidental power rather upon density of population and personal uncleanliness, than upon any other causes. An atmosphere highly charged with emanations from living bodies, seems to be the chief stimulant of the choleric influence. ” This opinion of the committee is the more remarkable, as on page 125 (same report) they say:—“In a healthy district, twenty-six miles from Philadelphia, resided a respectable farmer, I. Sloanaker; about three-eighths of a mile from him lived his son, M. Sloanaker, who had charge of and cultivated the farm;” it goes on to state, that the two families consisted of fifteen persons, of all ages, from seven to sixty-five years, of whom eleven took the disease and five died. Here was neither “ density of population, or uncleanliness, ” being a 4 “ healthy district, and respectable farmers; ” the discrepancy therefore, in these, statements is certainly very surprising. The committee would have had no difficulty when here, in tracing the epidemic in its most malignant character, to the healthiest locations in and near the city, amongst respect- able families, on high and dry situations, on the beautiful hills near the city, and on the hill sides, overlooking it; in several instances, not an individual left—all gone—swept out of exis- tence in a few hours ! Now mark the contrast! on “sausage row ” (near the river) I am informed that not one died, and very few died along shore, except strangers ; (boatmen*) the same was the case at St. Louis—in their sausage rows, no deaths occurred. These facts are likewise greatly at variance with the report of the sanitary committee of Philadelphia, in 1848, wherein they say, that, “ low damp situations, rich alluvial soils, wharves, banks of rivers, and streams, imper- fect ventillation, &c. all tend in a special manner to promote the prevalence of Cholera. ” This is altogether at variance with our experience here, and throughout the country. San- dusky, Newhope, and many other towns as clean as any in the state, were attacked with a perfect ferocity by the cholera ; while others, not at all remarkable for cleanliness, escaped. The committee on epidemics appears to attach much im- portance to the case reported by Dr. S. Hanbury Smith, as follows :—“ In a frame building at the corner of Plum and William street, there lived about 33 persons. Of these, eight boarders occupied four of the largest rooms, sleeping only two in each room, but the other small rooms were occupied by whole families for every domestic purpose, from five to eight persons residing in each room. Of the twenty-five per- sons who were thus crowded together in the small rooms, twenty-three died of cholera, whilst of the eight who slept in the larger rooms, not one was attacked by that disease, although they assisted in nursing those who were sick. ” The Doctor appears to have been misinformed in almost every particular,—I will explain as I had it from the owner of the house and her family to day (14 Jan.) There are sixteen rooms in the house :—• Three rooms were occupied by the family of the owner of * Those flatboatmen in several cases, I know, were from the sand-stone regions, about 100 miles up the river; and the change of water they had been accustomed to, to that of even the river, (low at the time) may have operated fatally, by giving effect to an atmosphere charged with the miasm of cholera. the property, consisting of - - - 6 persons 2 died.* Say room No. 1, “ “ “ 5 “ 0 “ a a 2 “ (( fi 4 <( 2 ££ u a 3 a (( (( 3 a j « u (( 4 « «