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Similary solutions of the laminar boundary layer equations describing heat and flow in a quiescent fluid driven by an exponentially stretching surface subject to suction are examined numerically. The direction and amount of heat flow were found to be dependent on the magnitude of "γ" (parameter of temperature) for the same Prandtl number. Nusselt number increases with increasing "γ" and the Prandtl number. The effect of decreasing suction parameter is found to be significant particularly for the Prandtl number.