... time, the excitability of the optic nerve accumulates again, and we are again capable of seeing with an ordinary light A Lecture on the Preservation of Health, by We find, that we are not always ... time at as great a distance from the fire as possible, that the accumulated excitability may be gradually exhausted, by the moderate and gentle action of heat; and then you may bear the heat of the ... the particles of the water; the salt and water in these instances, are said to act on each other chemically; and in all cases whatever, in which inanimate, or dead bodies act on each other, the...