Figure 1--Schematic diagram of right marten or fisher forefoot track collected from sooted track impressions on white Con-Tact paper. Toe pads are identified with numbers (1­5) while interdigital pads and the heel pad are represented with letters (I1­I4, H). The ordinate of the Cartesian grid is formed by bisecting the angle of intersection created by lines joining the medial margins of 2 and I3 and the lateral margins of 5 and I3. A is the width of I3, B is the length of I3, and C is the length of I4.