“The Scarificator employs a number of small blades so constructed as to be operated by a powerful spring.  The cutting edges of the knives are circular in form, and are all designed to cut to the same depth, the extent of which may be regulated by a screw device.  By setting and releasing the spring, the incisions are made so quickly as to produce no pain.  The instrument being automatic, complicated and difficult to clean, is now but little used.  It has been replaced by the scalpel and bistoury, which are more completely under the control of the surgeon.”