The loss of a single plate does not destroy the value of the book for readers, however to be regretted as diminishing the satisfaction to be derived from the volume. And one can sometimes pardon the loss of a part of a page in a mutilated book, especially when he is made aware of the fact that the library which welcomes him to the free enjoyment of its treasures cannot well afford to buy another. It is disheartening to read, in an annual report of a public library of circulation in Massachusetts, that many of its popular books are so soiled and defaced, after a few readings, as to be unfit for further service; that books of poetry are despoiled by the scissors to save trouble of copying verses wanted; that plates are often abstracted, and that many magazines "seem to be taken from the library for no other reason than that private scrap-books may be enriched or restless children amused." The only remedy suggested is to examine each book before again giving it out, and, if returned defaced, to hold the borrower responsible. The art of cleaning books that are stained or dirty, is a matter not widely known, and in this country there are few experts at it. Some of these keep closely guarded the methods they use to cleanse a book. Comparatively few libraries avail themselves of the practice of washing their soiled volumes, as the process is too expensive for most of them, and so they are accustomed to let the library books remain in use and re-issue them again and again, until they become so filthy as to be quite unfit to be seen--much less handled by any reader.