About the middle of the 16th century, Frey Rodrigo de Corcuera, invented a mill which worked like a clock: a model of which he laid before Charles Vth. It was considered as an invention of considerable importance in a country where running streams are scarce, and calms frequent, and the Emperor ordered him to erect one at Aguilar de Campos. He died before it was completed. This same Monk presented Maximilian with a sword, which by means of a spring, shot out a point of diamond with such force as to pierce the strongest breast-plate.
Yepes, t.6. ‘ff’. 91.