BIBLIOGRAPHICAL QUERIES

1. Has anything recently transpired which could lead bibliographers to form an absolute decision with regard to the "unknown" printer who used the singular letter R which is said to have originated with Finiguerra in 1452? That Mentelin was the individual seems scarcely credible; and there is a manifest difference between his type and that of the anonymous printer of the *editio princeps* of Rabanus Maurus, *De Universo*, the copy of which work (illuminated, ruled, and rubricated) now before me was once in Heber's possession; and it exhibits the peculiar letter R, which resembles an ill-formed…