Robert Galbraith (Caubraith is the old Scots spelling) was one of several Scottish members of a distinguished circle of logicians, philosophers, and theologians that flourished at the University of Paris during the first three decades of the sixteenth century. In 1505 the center of the circle, the Scottish logician John Mair, mentioned Galbraith as one of the members of his circle who persuaded him, despite his suffering from bouts of fever and an overwhelming workload, to prepare his logic lectures for publication. Some five years later Galbraith published the only book of his that is still extant, a four-part work on propositional opposites, propositional conversions, hypotheticals, and modal propositions. On the title page, indeed in the title itself, he claims to have resolved almost all problems of dialectic. He wrote another book, the Liber Caubraith, which was probably on his legal decisions, but it appears not to have survived...