Galilei, GALILEO

1564-1642. Prof. Pisa 1590-91, Padua 1592. A universal genius, pursuing in his younger days with equal succe music, painting, literature, medicine and philosophy. At 20 he chanced to hear a lecture by Ostilio Ricci on geometry, of which he was till then ignorant; this turned his whole attention to mathematics and physics. His contributions to science constitute a long list of most important discoveries in physics, mathematics and astronomy. Mention can only be made of his difficulties with the ecclesiastical powers and his