4) Rocky Mountain Spotted Fever: This disease is caused by a bacterium known as Rickettsia rickettsia. This disease is not transmitted directly from your pet to you, but rather by ticks that your dog may carry.
Home Johann Gutenberg Johann Gutenberg. Johann Gutenberg invented the printing press in the 1450's, and the first book to ever be printed was a Latin language Bible, printed in Mainz, Germany. Gutenberg's Bibles were surprisingly beautiful, as each leaf Gutenberg printed was later colorfully hand-illuminated.
Gutenberg certainly introduced efficient methods into book production, leading to a boom in the production of texts in Europe -- in large part, owing to the popularity of the Gutenberg Bibles, the first mass-produced work, starting in 1452. Even so, Gutenberg was a poor businessman, and made little money from his printing system.