Page:Essays in librarianship and bibliography.djvu/244

 I may refer to Petzholdt's "Bibliotheca Bibliographica." It is in so far deficient that it necessarily contains no reference to the recent labours of our American friends and colleagues, who, coming to the subject with unbiased minds and an inventive ingenuity and fertility equalled by no other nation, have already done so much to advance the frontiers of the librarian's science.