At folio 71 they are still neck and neck, and at folio 81 the same.

At folio 87 the oval worm gives in, the round one eating three more leaves and part way through the fourth.

The leaves of the book are then untouched until we reach the sixty-ninth from the end, upon which is one worm hole.

After this they go on multiplying to the end of the book.
I have quoted this instance because I have it handy, but many worms eat much longer holes than any in this volume; some I have seen running quite through a couple of thick volumes, covers and all.

In the "Schoeffer" book the holes are probably the work of Anobium pertinax, because the centre is spared and both ends attacked.