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unusual facts about Silvester Petra Sancta


Silvester Petra Sancta

The book is about the life of the Jesuit monk cardinal Roberto Francesco Romolo Bellarmino (1542-1621) who was the head of the Sanctum Officium (the Roman Inquisition) and had respect for the scientific achievements of Galilei and was anxious about the dullness of his co-workers.


Jan Baptist Zangrius

However, the hatching systems of Silvester Petra Sancta (1638) and Marcus Vulson de la Colombière (1639), respectively differ from the method developed by Zangrius in the way of hatching of the colour Sable.


see also