Tonics permanently increase the tone or vigor of the system, being particularly useful in the recovery from low fever.

Tonic pill:

62 - Sulphate of quinine, 1 to 3 grains. Extract of hemlock, 2 grains. Ginger, 2 grains.

Mix, and give twice a day.

Tonic mixture:

63 - Compound tincture of bark, 2 ounces. Decoction of yellow bark, 14 ounces.

Mix, and give three tablespoonsfuls twice or thrice daily to a large dog.