The writer has already shown that there are bright exceptions to this general charge brought by Dr. Alban against British writers, but the overwhelming mass of them have acted more like envious children than like men when speaking of the authorship of the double acting high pressure steam engine, the locomotive, and the steam railway system. Speaking of this class of British writers, Prof. Renwick, when alluding to their treatment of Oliver Evans, writes: "Conflicting national pride comes in aid of individual jealousy, and the writers of one nation often claim for their own vain and inefficient projectors the honors due to the successful enterprise of a foreigner." Many of these writers totally ignore the very existence of Oliver Evans, and all of them attribute to Trevithick and Vivian the authorship of the high pressure steam engine and the locomotive. Yet, when doing so, all of them substantially acknowledge the American origin of both inventions, because it is morally certain that Trevithick and Vivian got possession of the plans and specifications of his engine. Oliver Evans sent them to England in 1794-5 by Mr. Joseph Stacy Sampson, of Boston, with the hope that some British engineer would approve and conjointly with him take out patents for the inventions. Mr. Sampson died in England, but not until after he had extensively exhibited Mr. Evans' plans, apparently, however, without success. After Mr. Sampson's death Trevithick and Vivian took out a patent for a high pressure steam engine. This could happen and yet the invention be original with them. But they introduced into Cornwall a form of boiler hitherto unknown in Great Britain, namely, the cylindrical flue boiler, which Oliver Evans had invented and used in America years before the names of Trevithick and Vivian were associated with the steam engine. Hence, they were charged over fifty years ago with having stolen the invention of Mr. Evans, and the charge has never been refuted. Hence when British writers ignore the just claims of Oliver Evans and assert for Trevithick and Vivian the authorship of the high pressure steam engine and the locomotive, they thereby substantially acknowledge the American origin of both inventions. They are not only of American origin, but their author, although born in 1755, was nevertheless an American of the second generation, seeing that he was descended from the Rev. Dr. Evans Evans, who in the earlier days of the colony of Pennsylvania came out to take charge of the affairs of the Episcopal Church in Pennsylvania.