The symptoms noted by physicians, such as Kaye and Bacon, may be classed into three distinct periods: 1. The period of chill, characterized by pains and formication in the limbs an extraordinary prostration of the physical forces—a tremulous, shaky period. 2. The period of sweat, preceded by a burning heat all over the body and an unquenchable feverish thirst. The patient was agitated, disquieted by terror and despair. Many complained of spasms in the stomach, followed sometimes by nausea and vomiting, suffocation and lumbar pains—a constant symptom ever—headache, with palpitation of the heart and præcordial anxiety. 3. This period was announced by a high delirium, sometimes muttering, sometimes loquacious; a fetid sweaty odor, irregular pulse, coma, and, in the last-named condition, death always occurred. The duration of the disease was most frequently but a few hours, rarely exceeding a day, whether the termination was favorable or fatal. Convalescence was always long, often being complicated by diarrhœa or dropsy. It has been remarked in this connection that the malady might be confounded with the miliary sweat observed in Picardy and central France, but in the first named disease no cutaneous eruption was observed. Fernel clearly affirms this statement, as he says: “In this affection there is no carbuncle, bubo, exanthema nor eczema, but simply a hypersecretion of sweat.” Such was the sweating sickness of the sixteenth century, which made so few victims in France, but which destroyed so many people in England and Germany. The origin of this disease has been often discussed, and also its nature; but all theories emitted by various authors partake of the doctrines of other days and are too antiquated to be revamped. We will content ourselves with saying that the classification of periods made by us is logical, and we consider the sweating sickness of the fifteenth century as a pernicious fever, in which the sweating stage predominated and consequently became the characteristic symptom of the affection. THE SCURVY. It has been supposed by many that Hippocrates described scurvy under the name of _enlarged spleen_, an affection attributed to the use of stagnant water and characterized by tumefaction of the gums, foul breath, pale face, and ulceration of the lower limbs. But the study of this Hippocratic passage leads us to think that these symptoms were more of the character of scrofula than of scurvy. The recital by Pliny of the diseases of the Roman soldiers while on an expedition to Germany seems to indicate scurvy, which Coelius Aurelianus, and after him the Arabian physicians, claims presented only a slight analogy to that affection.