Title: A treatise on the virtues and efficacy of a crust of bread, eat early in a morning fasting, to which are added some particular remarks concerning the great cures accomplished by the saliva or fasting spittle, as well when externally applied, as when internally given, in the scurvy, gravel, stone, rheumatism, and divers other diseases, arising from obstructions. With ... observations concerning the recrements of the blood ...