The number of works issued from the press of the Elzevirs, whether at Leyden, Amsterdam, or Utrecht, numbers, according to Willems, 1608 different publications, of which 1213 bear the name or mark of the firm which issued them. Of these latter, 968 are in Latin, 126 in French, and the remainder in Greek, Flemish, German, Italian, and Hebrew. There is also a single volume, printed in English, which seems to have escaped the notice of bibliographers. It is entitled "_Confession_ _of Faith, and the Larger and Shorter Catechisme, &c._, Amsterdam, printed by Luice Elsever, for Andrew Wilson, and are to be sold at his shop in Edinburgh, 1649". It is usually stated in works of reference that none of the Elzevir publications were printed in English, but the above, if it is genuine, affords an exception. As every amateur is aware, the Elzevirs frequently--but not always--marked their title-pages with devices, of which the most frequent were the Sphere, the Hermit, Minerva, and the Eagle on a cippus (low column) holding in its claws a sheaf of seven arrows. As each firm adopted or relinquished the family marks to suit its convenience at the time, it becomes necessary to tabulate them for the purpose of avoiding confusion. The number in brackets gives the total number of books, not including catalogues, produced by the firm to which it is annexed. THE LEYDEN PRESS. _Louis Elzevir._ 1583-1617 (102 books). Marks.--A hand, with the device--"AEqvabilitate". An angel with a book. The Eagle (with seven darts representing the seven provinces of the Netherlands) on a cippus, with the inscription--"Concordia res parvae crescunt" (most frequent). A book of music, opened. _Matthieu and Bonaventure Elzevir._ 1617-1622 (71 books). Marks.--The Eagle on a cippus. The book of music, opened. The Hermit, first appearing on the _Acta Synodi Nationalis_, 1620 (Isaac Elzevir), motto--"Non solus". [Illustration] Of the three marks mentioned above the first and last were more usually employed. _Isaac Elzevir._ 1617-1625. Marks.--Two hands holding a cornucopia (rare). The Eagle on the cippus. The Hermit. _Bonaventure and Abraham Elzevir._ 1622-1652 (514 books). Marks.--The Hermit (most frequent). The Eagle on a cippus. The Sphere, first appearing on the _Sphaera Johannis de Sacro-Bosco_, 1626. The Arms of the University. A palm tree with the device "Assvrgo pressa".[10] Minerva, with her attributes (the olive tree and the owl) and the motto "Ne extra oleas". [Illustration]