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Francisco De Andrea, Leonardo a Capua, Luca Antonio Portio, and countless others. Since you have also kindly welcomed and joined me to their company, I offer to you, most excellent man, this work of mine On Natural Motions Depending on Gravity so that I do not approach you with empty hands. This work follows the teaching of my previous writings on the movements of animals original: de Animalium motibus; Borelli refers to his research into biomechanics, which would eventually be published as De Motu Animalium. In this book, philosophical reasons for many natural experiments are presented. I witnessed these experiments in Florence at the Medicean Experimental Academy original: Academia Experimentali Medicea; this refers to the Accademia del Cimento, one of the first societies to use the experimental method, and they were likewise observed with great accuracy in your own Neapolitan academy. Indeed, best of men, you will find in this book certain things able to advance natural science, a subject for which you possess such an intense passion. Enjoy these findings, and farewell.