1884
ID: 1053
Pope Leo XIII immediately composes St. Michael Prayer after vision of Satan's request
ID: 1053
1884
ID: 1054
Engels publishes Origin of Family, Private Property and State - advocates destroying traditional family
ID: 1054
1884
ID: 1055
Electrical power systems expand in major cities
ID: 1055
1884
ID: 1056
Heinrich Hertz confirms Maxwell's prediction of electromagnetic waves - validates mathematical physics
ID: 1056
1884
ID: 1057
Sophus Lie develops systematic theory of transformation groups - continuous symmetries
ID: 1057
1884
ID: 1058
Emil Fischer begins work on sugar chemistry at University of Erlangen - advances pharmaceutical chemistry
ID: 1058
1884
ID: 1059
Third US foot-and-mouth outbreak
ID: 1059
1884
ID: 1060
Leicester Mercury: All recent smallpox outbreaks appear among populations with rigorous vaccination
ID: 1060
1884
ID: 1061
Arthur Ward case: Wife dies from stress of vaccination enforcement while pregnant
ID: 1061
1884
ID: 4216
Herman Hollerith files first patent application for his electromechanical punched card tabulator while working at U.S. Patent Office
ID: 4216
1884
ID: 1050
January 6, 1884
Pope Leo XIII institutes Leonine Prayers after Low Mass for defense of papal independence
ID: 1050
1884
ID: 1051
April 20, 1884
Pope Leo XIII condemns Freemasonry in Humanum Genus - human race separated into two opposite parts
ID: 1051
1884
ID: 1052
October 13, 1884
Pope Leo XIII has terrifying vision during Mass - Satan asks 75-100 years to destroy Church
ID: 1052