This sporting monthly, with a primary emphasis on horse racing, was edited by J. S. Skinner and published (in Baltimore, Maryland) from 1829 to 1844.
The October, 1838, issue included an article (part of series) on "Historical Notices of the Dog," which had this to say about the Newfoundland:
From the time of James the 1st, until the present day, the principal breeds of the dog best known in the British Islands appear to have under-gone but little change. Varieties of the species have from time to time been introduced from abroad by voyagers and travellers, but their distinctive character has been, after a short period, generally lost. This has chiefly arisen from the small number introduced, together with the various breeds possessing no advantage over those that were already known. The Newfoundland dog, whose strength and size, combined with his extreme docility and harmless disposition, render him so truly valuable, has indeed become naturalized in Britain. (458)