Our thanks for criticisms and suggestions are due to Professors Robert Herrick, Robert Morss Lovett, and Percy Holmes Boynton. To Mr. G. Teyen, of the Chicago Public Library, we are indebted for continual help in procuring books, verifying references, and, in general, for putting the resources of the library at our disposal. INDEXES AND CRITICAL PERIODICALS _Indexes_ American Library Association Index, (to 1900) A.L.A.I. Supplement, 1901-1910 A.L.A. Supp. Annual Literary Index (1892-1904) A.L.I. Continued as Annual Library Index, 1905-1910 A.L.I. Dramatic Index, 1909- D.I. Published with Annual Magazine Subject Index. Magazine Subject Index: Boston, 1908 M.S.I. Continued by Annual Magazine Subject Index, 1909- A.S.I. Poole's Index to Periodical Literature, 1802-1881 Poole Supplements, 1882-1906; 1907-1908 Poole Supp. Reader's Guide to Periodical Literature, 1900- R.G. Supplement, 1907-1915, 1916-1919 R.G. Supp. Continued as International Index to Periodicals, 1921- I.I.P. _Periodicals_ (The initials following the abbreviated titles of the periodicals refer to the indexes in which they are listed.) The _Book Review Digest_, 1905- ----, contains summaries of important reviews in periodicals and newspapers. Academy: London (ceased 1916)--Acad. American Catholic Quarterly Review: Philadelphia--Amer. Cath. Quar. Athenaeum: London--Ath.--A.L.I. Combined with Nation (London), Feb. 19, 1921. Atlantic Monthly: Boston--Atlan.--R.G.; A.S.I. Bellman: Minneapolis, Minn. (ceased 1919). Booklist (A.L.A.): Chicago. Bookman: New York--Bookm.--R.G. Bookman: London--Bookm. (Lond.)--D.I.; A.S.I. Book News: Philadelphia (ceased 1918). Boston Transcript: Boston--Bost. Trans. Catholic World: New York--Cath. World. Century: New York--Cent.--R.G. Chapbook (a Monthly Miscellany): London. Columbia University Quarterly: New York--Columbia Univ. Quar. Contemporary Review: London and New York--Contemp.--R.G.; A.S.I. Craftsman: New York. Includes some literary studies. Critic: New York (ceased 1906)--R.G. Current Literature: New York (name changed to Current Opinion, 1913)--Cur. Lit.--R.G. Current Opinion: New York--Cur. Op.--R.G. Dial: New York--Dial--R.G. Double-Dealer: New Orleans (1921- ----). Drama: Washington--Drama--R.G.S. Dublin Review: London--Dub. R.--D.I.; A.S.I.; R.G.S. Edinburgh Review: Edinburgh--Edin. R. Egoist: London (1914-19). Includes art, music, literature, emphasizing especially new movements. English Review: London (1908- ----)--Eng. Rev.--R.G.S.; D.I.; A.S.I. Fortnightly Review: London and New York--Fortn.--R.G.; A.S.I. Forum: New York--R.G.; A.S.I. Freeman: New York (ceased 1924). Harper's Magazine: New York--Harp. Independent: New York--Ind.--R.G.