We have another contagionist in the field--a writer in the _Foreign Quarterly Review_, the value of whose observations may appear from his statement, that "in 1828 the disease broke out in Orenburg, and was supposed [_supposed_!] to have been introduced by the caravans which arrive there from Upper Asia, or [_or_, nothing like a second string] by the Kingiss-Cossacks, who are adjoining this town, and were said [_were said_!] to have been about this time affected with the disease." This single extract furnishes an excellent specimen of the sort of _proofs_ which the contagionists, to a man, seem to be satisfied with as to the cholera being "carried" from place to place. This gentleman must surely be under some very erroneous impression, when he states that, "According to the reports of the Medical Board of Ceylon, the disease made its appearance in 1819 at Jaffnah in Ceylon, imported from Palamcottah, with which Jaffnah holds constant intercourse, and thence it was propagated over the island." Now there is every reason to believe that a reference to the documents from Ceylon will shew that no report as to the importation of the disease was ever drawn up, for Drs. Farrel and Davy, as well as Messrs. Marshall, Nicholson, and others, who served in that island, are, to this hour, clearly against contagion. But as the writer tells us that he is furnished with unpublished documents respecting the cholera at St. Petersburg, by the chief of the medical department of the quarantine in this country, we do not think it necessary to say one word more--_ex pede Herculem_. I rejoice to observe that Dr. James Johnson has, at last, _spoken out_ upon the quarantine question; and I trust that others will now follow his example. It is only to be regretted, that a gentleman possessing such influence with the public as Dr. Johnson does, should have so long with-held his powerful aid on the occasion; but his motives were, I am quite sure, most conscientious; and I believe that he, as well as others, might have been prevented by a feeling of delicacy from going beyond a certain point.