A Compilation of all of Pope St Pius X's Encyclicals E Supremi (October 4, 1903) 4 ON THE RESTORATION OF ALL THINGS IN CHRIST Ad Diem Illum Laetissimum (February 2, 1904) 18 ON THE IMMACULATE CONCEPTION Iucunda Sane (March 12, 1904) 37 ON POPE GREGORY THE GREAT Acerbo Nimis (April 15, 1905) 60 ON TEACHING CHRISTIAN DOCTRINE Il Fermo Proposito (June 11, 1905) 75 ON CATHOLIC ACTION IN ITALY Vehementer Nos (February 11, 1906) 92 ON THE FRENCH LAW OF SEPARATION Tribus Circiter (April 5, 1906) 108 ON THE MARIAVITES OR MYSTIC PRIESTS OF POLAND Pieni L'Animo (July 28, 1906) 115 ON THE CLERGY IN ITALY Gravissimo Officii Munere (August 10, 1906) 124 ON FRENCH ASSOCIATIONS OF WORSHIP Une Fois Encore (January 6, 1907) 130 ON THE SEPARATION OF CHURCH AND STATE Pascendi Dominici Gregis (September 8, 1907) 140 ON THE DOCTRINES OF THE MODERNISTS Communium Rerum (April 21, 1909) 208 ON ST. ANSELM OF AOSTA Editae Saepe (May 26, 1910) 243 ON ST. CHARLES BORROMEO Iamdudum (May 24, 1911) 269 ON THE LAW OF SEPARATION IN PORTUGAL Lacrimabili Statu (June 7, 1912) 278 ON THE INDIANS OF SOUTH AMERICA Singulari quadam (September 24, 1912) 284 ON LABOR ORGANIZATIONS