1. The sequence and duration of contraction of the tibialis anterior, the peronei, the gastrocnemius and soleus (tendo achillis), the extensor digitorum communis, and tibialis posterior have been recorded during the act of walking.
2. All records have been timed accurately to within hundredths of a second.
3. With this precision, the records of muscle function have been simultaneously correlated with the sequence and duration of the weightbearing areas of the feet during the act of walking.
4. The record of "normal" gait presented herewith is based upon the results obtained from the making of more than 1,000 records of human locomotion by the electrobasographic method.