Each volume is complete and independent; but the series has been carefully planned as a whole to form a comprehensive library of modern knowledge covering the chief subjects in History and Geography, Literature and Art, Science, Social Science, Philosophy, and Religion. An order for any volume will insure receiving announcements of future issues. _SOME COMMENTS ON THE SERIES AS A WHOLE:_ "Excellent."--_The Outlook._ "Exceedingly worth while."--_The Nation._ "The excellence of these books."--_The Dial._ "So large a proportion with marked individuality."--_New York Sun._ VOLUMES ON HISTORY AND GEOGRAPHY NOW READY =Rome= By W. WARDE FOWLER. =The History of England= By A.F. POLLARD. =The Opening Up of Africa= By H.H. JOHNSTON. =The Civilization of China= By H.A. GILES. =History of Our Time (1885-1911)= By G.P. GOOCH. =The Colonial Period= By CHAS. M. ANDREWS. =Reconstruction & Union (1865-1912)= By L.P. HAWORTH. =The Civil War= By F.L. PAXSON. =The Dawn of History= By J.L. MYRES. =Peoples and Problems of India= By T.W. HOLDERNESS. =Canada= By A.G. BRADLEY. =The French Revolution= By HILAIRE BELLOC. =A Short History of War & Peace= By G.H. PERRIS. =The Irish Nationality= By ALICE S. GREEN. =The Papacy & Modern Times= By W. BARRY. =Medieval Europe= By H.W.C. DAVIS. =Warfare in Britain= By HILAIRE BELLOC. =Modern Geography= By MARIAN I. NEWBIGIN. =Polar Exploration= By W.S. BRUCE. =Master Mariners= By JOHN R. SPEARS. HENRY HOLT AND COMPANY 34 WEST 33RD ST. NEW YORK American Public Problems EDITED BY RALPH CURTIS RINGWALT IMMIGRATION: And Its Effects Upon the United States By PRESCOTT F. HALL, A.B., LL.B., Secretary of the Immigration Restriction League. 393 pp. $1.50 net. By mail, $1.65. "Should prove interesting to everyone. Very readable, forceful and convincing. Mr. Hall considers every possible phase of this great question and does it in a masterly way that shows not only that he thoroughly understands it, but that he is deeply interested in it and has studied everything bearing upon it."--_Boston Transcript._ "A readable work containing a vast amount of valuable information. Especially to be commended is the discussion of the racial effects. As a trustworthy general guide it should prove a godsend."--_N.Y. Evening Post._ "Earnest and unprejudiced.... Cannot fail to be of great assistance in clarifying and setting on a solid foundation the ideas of people who are now becoming convinced that the problems of immigration in the nation and the municipality will soon reach a more acute stage than ever before."--_Philadelphia Press._