There is another fact in history, which, though not so applicable to this subject as those above recited, forcibly evinces how important a study the health of men ought to be in military affairs. When Henry V. was about to invade France, he had an army of fifty thousand men; but owing to a sickness which arose in the army, in consequence of some delays in the embarkation, their number was reduced to ten thousand at the battle of Agincourt. The disease of which they chiefly died was the dysentery. RAPIN. [37] It is not meant by this to insinuate that every commander is absolutely accountable for the health of his ship’s company, and censurable when they are sickly; for this may depend on his predecessor in command, or a stubborn infection may have prevailed from the original fitting out or manning of the ship which he may not have superintended. [38] Οὐ γαρ ἐγωγέ τι οῗδα κακώτερον ἄλλο θαλάσσης, Ανδεά τε συγχεῦαι, εἰ καὶ μάλα καρτερὸς εἴη. ΟΜΗΡ. ΟΔΥΣ. Θ. Dire is the ocean, dread in all its forms! Man must decay, when man contends with storms. POPE. [39] Wherever causes are obscure, superstition naturally ascribes them to some preternatural influence; and what seemed farther to have encouraged this, anciently, was, that violent epidemics occurred most frequently in camps and at sieges where great political conjunctures were likely to arise, in which superior powers were supposed to interest themselves. Thus we read in Homer of fatal diseases being sent as punishments by the gods. But the pestilential diseases so often mentioned by poets and historians as prevailing in cities and armies, were probably nothing else but fevers, produced partly perhaps by the scarcity and bad quality of provisions, but probably still more by corrupted human effluvia, which was very apt to he produced by the want of personal cleanliness, to which the mode of cloathing among the ancients would more particularly subject them, especially in camps and besieged towns. [40] If the experiments of modern philosophy are to be depended on, they go a certain way to account for the unwholesomeness of air from woods in hot climates, and in wet weather; for Dr. Ingenhousz found that the effluvia of plants in the night time, and in the shade, are more poisonous in hot than in cold weather; but though there is a salubrity in the effluvia in sunshine, the heat of the weather makes no difference with regard to this. He found also that vegetables, when wet, yield an unwholesome air.