sentences:  Baptista is identified as a "scholar," though in the seventeenth century a scholar's practice could include magic and forms of divination like astrology.It becomes clear that Baptista is this type of scholar, when he informs Mathias that he has "found, / By certain rules of art," that Sophia is as yet a faithful wife.Baptista has also prepared a miniature portrait of Sophia that will remain clear as long as she is a chaste wife, but will yellow if she is tempted to infidelity, and turn dark if she succumbs to temptation.