An analog computer programme for solving the "co ordination equations" developed by Chandler, Dandeno, Glimn, and Kirchmayer 1 (CDGK) is formulated and tested. These coordination equations are wanting in that the plant maximum and minimum limits of operation have not been considered in CDGK's problem formula tion.2 New coordination equations which consider plant operation limits are therefore derived. These new equa tions are reduced to a form suitable for analog compu tation. The practical feasibility of an iterative-type ana log solution to CDGK's equations as well as to these new equations is established.
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