I
Institutio — In this deficient leaf the preceding catchword proves that the first word must have been Institutio. There is no article, indeed, beginning with that word in the next Index of Paul IV., nor in the following Tridentine of Pius IV.; but in the very next, the suppressed one of Sixtus V., there are two — Institutio Principis, and Institutio Religionis Christianæ impressa Vuirtenbergæ, anno 1536. Both these entries are likewise found in the next, Clement VIIIth's, Index, and one or other, or both, were probably in the present Catalogue. In conjecturing what may have been the names or titles besides in the leaf in question, we can have no better guide than the immediately succeeding Index, that of Paul IV. already adverted to; and there, although demonstrably more extended, we find but the names of Janus, Gasparus, and five Ioachimus's, between Iacobus and Ioannes, which last begins with the sirname, Aepinus. After this we might, not unreasonably, expect to find, of those in the latter Index, the names in alphabetic order, of Brentius, Calvinus — perhaps it was too early for Foxus — Frith, Hoperus, à Lasko, Oecolampadius, Sleidanus, Staupitius. The first name in the next leaf, Stigelius, comes next. The whole number of names in Paul IVth's Index is too extended to be brought within the space of this single leaf.
B
