In January, 1866, the members of the Aberdeenshire Cattle Plague Association being much interested in the question as to how the disease could possibly have reached Pitmillan, Fovernan, no suspicious communication by beast or otherwise having taken place with the farm for weeks, Mr Hay, veterinary surgeon, inspector for the county, gave the following explanation of the matter in a letter to Mr Barclay, the hon. secretary:—“I am happy to be able to satisfy the public mind as to how the disease was brought to Pitmillan. About Christmas Mr Fraser got from Mr Duncan, flesher, Aberdeen, a quantity of beef rolled up in packsheet, which had apparently paid several visits to London round carcases, and doubtless mingled there with many of its kind from various places of the kingdom. After being removed from the beef at Pitmillan, this packsheet was thrown aside for some time, when one of the servant girls took and used it (unwashed) as an apron for a considerable period before the first cow got bad, and was carrying the kail in it to the cow after she was taken ill. You see by this that we are liable to get the disease at any time. Tons of packsheet return weekly by railway, and no surer agent could be employed to bring rinderpest to the country.” The secretary having some doubt about the guilt of the packsheet (which however, was gravely accused in both Houses of Parliament), reported his opinion that the contagion was conveyed by the wind! [ED.] If indeed the emanations thrown off from the living body formed permanent and powerful poisons, like miasms connected with the products of decomposition, and if they were, like such products, capable of being conveyed unchanged to great distances, we should be able to live only in solitude; we could never meet in society, for we should poison each other; the first symptom of illness would be the signal for the abandonment of the sick, and we should be compelled by a due regard to self-preservation to withhold from persons afflicted with disease every kind and degree of assistance that required personal attendance.