Wilbur had with him the priceless but imperfect copy of Dr. Dee's English version which his grandfather had bequeathed him, and upon receiving access to the Latin copy he at once began to collate the two texts with the aim of discovering a certain passage which would have come on the 751st page of his own defective volume. This much he could not civilly refrain from telling the librarian—the same erudite Henry Armitage (A. M. Miskatonic, Ph. D. Princeton, Litt. D. Johns Hopkins) who had once called at the farm, and who now politely plied him with questions. He was looking, he had to admit, for a kind of formula or incantation containing the frightful name Yog-Sothoth, and it puzzled him to find discrepancies, duplications, and ambiguities which made the matter of determination far from easy. As he copied the formula he finally chose. Dr. Armitage looked involuntarily over his shoulder at the open pages; the left-hand one of which, in the Latin version, contained such monstrous threats to the peace and sanity of the world.