| Abstract: | New evidence, both theoretical and observational, is presented to show that Horton's Laws of Stream Numbers and Mean Stream Lengths represent the geomorphic application of abstract mathematical relationships. The laws follow automatically from the definition of order and must apply equally well to any branching system. The value of each of the coefficients Rb (bifurcation ratio) and Rl (ratio of mean stream lengths) is at least partly controlled by geomorphic factors, and an attempt has been made to describe the operation of these factors. |
