“We saw two prestys standing togeder and speaking togeder, and we saw both of them dye sodenly. Also in die--proximi we se the wyf of a taylour taken and sodenly dyed. Another yonge man walking by the street fell down sodenly. Also another gentylman ryding out of the cyte [date given] dyed. Also many others the which were long to rehearse we have known that have dyed sodenly.” Gentlemen and gentlewomen, priests, righteous men, merchants, rich and poor, were among the victims of this sudden death. Of the symptoms he says: “And this sickness cometh with a grete swetyng and stynkyng, with rednesse of the face and of all the body, and a contynual thurst, with a grete hete and hedache because of the fumes and venoms.” He mentions also “pricking the brains,” and that “some appear red and yellow, as we have seen many, and in two grete ladies that we saw, the which were sick in all their bodies and they felt grete pricking in their bodies. And some had black spots, as it appeared in our frere (?) Alban, a noble leech on whose soul God have mercy!” Both in his pathology and in his copious appendix of formulae he directs attention to the heart, as the organ that was suddenly overpowered by the pestilential venoms. Many died, he would have us believe, because they listened to the false leeches, who professed to know the disease and to have treated it before. A considerable part of his space is occupied with the denunciation of these irregular practitioners, their greed and their ignorance,--a theme which is a common one in the prefaces of Elizabethan medical works also. It appears that the false leeches wrote and put letters upon gates and church doors, or upon poles, promising to help the people in their sickness. They were also injudicious in the choice of their remedies--some ordaining powders and medicines that are hot until the thirtieth degree and over, others ale or wine, or hot spices, “and many other medicines they have, the which, the best of them, is nothing worth.” These false leeches knew not the causes,--their complexions, their ages, the regions, the times of the year, the climate,--evidently the astrological lore which gave Chaucer’s physician, a century earlier, his academical standing or his superiority to the vulgar quacks of his day. Those who fell into the hands of quacks, Forrestier implies, had an indifferent chance. Many died for want of help and good guiding; whereas many a one was healed that had received a medicine in due order, “and if he purge himself before.” The clearly written and fully detailed formulae at the end of his essay are so far evidence that Forrestier did not traffic in secret remedies. The first part of the essay is occupied with the doctrine of causes--the nigh causes and the far. The far causes were astrological; but the nigh causes, although they are altogether inadequate