_Mildew in Books._--Can you, or any of your readers, suggest a
preventive for mildew in books?
In a valuable public library in this town (Liverpool), much injury has
been occasioned by mildew, the operations of which appear very
capricious; in some cases attacking the printed part of an engraving,
leaving the margin unaffected; in others attacking the inside of the
backs _only_; and in a few instances it attacks all parts with the
utmost impartiality.
Any hints as to cause or remedy will be most acceptable.