I shall investigate the natural philosophy of the graduation theses of the Scottish universities in the first half of the seventeenth century. I shall seek to prove that the natural philosophy of the Scottish universities can be defined as 'Eclectic Scotistic Reformed Scholasticism'. The focus will be on two concepts of general physics: prime matter and movement. These concepts are fundamental to the understanding of Scholastic natural philosophy and its relation to early modern philosophy and science. My primary focus will be on the former aspect.