A Sprinter's "Re-Action Time."

Tests of quickness of movement similar to those made by Dr. Fitz at the Lawrence Scientific School are being made by Professor Scripture of the Yale psychological department. One of the most interesting of these tests is an arrangement for measuring a runner's reaction time down to the thousandth of a second which has been contrived in the Yale Laboratory. The starter's pistol is arranged so that an electric contact is broken when the pistol goes off. A thread is attached to the right foot of the runner which thread breaks an electric contact the moment the runner starts. Each of these electric contacts makes a spark on a smoked cylinder in such a way that the time which has elapsed between the first contact and the second can be measured.