Discussion on “tractive resistances to a motor delivery Wagon on different roads and at different speeds”, (Kennelly-Schurig), Cleveland, Ohio, June 30, 1916. (see proceedings for June, 1916)

A. A. Nims: (communicated after adjournment): There is one factor of tractive resistance which has not been separated and listed in this paper. Its value may be of small significance and perhaps may not affect the accuracy of the results to any great extent, but its existence should be recognized at least, if for no other present reason than technical accuracy.