| On folio 66 is 1 hole.
" 11 " 40 " | " 69 " 0 " It is curious to notice how the holes, rapidly at first, and then slowly and more slowly, disappear.

You trace the same hole leaf after leaf, until suddenly the size becomes in one leaf reduced to half its normal diameter, and a close examination will show a small abrasion of the paper in the next leaf exactly where the hole would have come if continued.

In the book quoted it is just as if there had been a race.

In the first ten leaves the weak worms are left behind; in the second ten there are still forty-eight eaters; these are reduced to thirty-one in the third ten, and to only eighteen in the fourth ten.

On folio 51 only six worms hold on, and before folio 61 two of them have given in.
Before reaching folio 7, it is a neck and neck race between two sturdy gourmands, each making a fine large hole, one of them being oval in shape.