As to the number of canonical books: none needful to salvation has perished; against Bellarmine and Becanus
First, as to the number of canonical books: none needful to us for salvation have perished. For Bellarmine is false when he says (On the Word of God book 4 chapter 4): "Many truly sacred and canonical books have perished. Therefore we do not have, nor have we had for 1500 years, sufficient doctrine, if the whole of it is seated in the Scriptures."
The antecedent is false, as is plain from considering the eighteen books Becanus brings forward as lost from the canon. For by God's singular providence the canonical books have been so kept that not even a jot, much less a whole book, could perish from the canon (Matthew 5:18).
Of the books Becanus and other papists complain are lost, we note: (1) some still remain in the canon today; (2) some never existed; (3) some were not books but recensions; (4) some are historical works whose prophetic spirit is not established; (5) some are forensic books, as interpreters will have it.
Latin
Primo, quantum ad librorum canonicorum numerum, nulli qui nobis ad salutem necessarii perierunt. Nam falsus est Bellarminus l.4. de V.D. cap.4.: Multi, inquiens, libri vere sacri & canonici perierunt. Ergo non habemus, nec habuimus a 1500. annis sufficientem doctrinam, si tota sita est in scripturis. Falsum est antecedens, id quod ex 18 librorum quos Becanus e canone amissos obducit consideratione manifestum est. Nam singulari Dei providentia libri canonici ita asservati sunt, ut ne jota quidem, multo minus totus liber e canone perire potuerit (Matth. 5.18). Notamus vero e libris quos Becanus aliique pontificii perditos queruntur: 1. quosdam in canone hodieque superesse; 2. quosdam nunquam exstitisse; 3. quosdam non libros sed recensiones fuisse; 4. quosdam esse historicos de quorum spiritu prophetico non constet; 5. quosdam libros esse forenses, ut volunt interpretes.