Adams, which arrived in perfect health _in the neighbourhood_ of a village of India infected with Cholera, had seventy cases of the disease the night of its arrival, and twenty deaths the next day," as if the march under a tropical sun, and the encampment upon malarious ground, or beneath a poisoned atmosphere, were all to go for nothing; and that the neighbourhood of an infected village, with which it is not stated that they held communication, had in that instantaneous manner alone, produced the disease. This is surely drawing too largely upon our credulity, and practising upon our fears beyond the mark. [Footnote 18: The Cholera in this country would appear always to travel with the pedestrian, and to eschew the stage coach even as an outside passenger.] The anti-contagionist, in acknowledging his ignorance, leaves the question open to examination; but the contagionist has solved the problem to his own mind, and closed the field of investigation, without, however, ceasing to denounce the antagonist who would disturb a conclusion which has given him so much contentment.--Let us here examine, for a moment, who in this case best befriends his fellow men. The latter, in vindication of a principle which he cannot prove, would shut the book of enquiry, sacrifice and abandon the sick, (for to this it must ever come the moment pestilential contagion is proclaimed,) extinguish human sympathy in panic fear, and sever every tie of domestic life,--the other would wait for proofs before he proclaimed the ban, and even then, with pestilence steaming before him, would doubt whether that pestilence could be best extinguished, or whether it would not be aggravated into ten-fold virulence, by excommunicating the sick. In my first letter I have endeavoured to unveil the mystery and fallacy of fumigations, for which our government has paid so dear,[19] and in place of the chemical disinfectants so much extolled, of the applicability of which we know nothing, and which have always failed whenever they were depended upon, have recommended the simple and sure ones of heat, light, water, and air, with one exception, the elements of our forefathers, which combined always with all possible purity of atmosphere, person, and habitation, have been found as sure and certain in effect as they are practical and easy of application. [Footnote 19: Parliament voted a reward of L5000 to Doctor Carmichael Smith for the discovery.]