The Leaning Tower of Pisa was closed to the public, as its accelerated rate of leaning raised fears for the safety of its many visitors 

Gerald Durrell, British author and naturalist, is born 

First airplane bombing experiments with explosives, SF 

Dutch Scouts Organization established in Amsterdam 

Marconi Company establishes CQD as 1st intl radio distress signal 

Start of Sherlock Holmes Adventure of Blanched Soldier (BG) 

The first aerial crossing of the English Channel was made by Jean Pierre Blanchard and Dr John Jeffries, in a hot-air balloon 

Italian astronomer Galileo discovered Jupiter's four satellites, naming them Io, Europa, Ganymede, and Callisto