The bark is of some value as a tonic and febrifuge.
This method had helped the House of Valois to consolidate its power; but what was tonic for a dynasty was death to a state whose headship was elective.
A sudden intense sense stimulus usually suffices to end this tonic discharge.
From time immemorial thera- savages have been accustomed to eat the hearts of lions and other wild animals, under the belief that they will thereby obtain courage and strength like that of the animal from which the heart had been taken, but in 1889 BrownSequard proposed to use testicular juice as a general tonic and stimulant.
By tonic contraction is meant a prolonged and equable state of tension which yields under analysis no element of intermittent character.