This section is from the book "Dental Medicine. A Manual Of Dental Materia Medica And Therapeutics", by Ferdinand J. S. Gorgas. Also available from Amazon: Dental Medicine.
Kandol is a product formed by the distillation of naphtha, and is a perfectly clear, colorless fluid, extremely volatile, burns easily, and has a slight odor of benzine. It can be mixed with a small quantity of water or alcohol, and its preparation is cheap and simple. Dr. Njuschkon advocates the use of kandol in the place of ether or cocaine as a local anaesthetic in the form of spray. In one minute kandol will reduce the temperature to 10° C, and keep it nearly uniform at that temperature for some time, while ether reduces the temperature to 170 C. As an effect of the spray of kandol, the skin becomes very hard and is completely anaesthetized, and there is no bleeding, or else the blood coagulates as soon as it makes its appearance, so that all operations may be performed with ease and rapidity.