Geometry and N=2 exceptional gauge theories

We find the Seiberg-Witten geometry for four dimensional N = 2 supersymmetr ic E-6 gauge theories with massless fundamental hypermultiplets, by geometr ically embedding them in type II string theories compactified on Calabi-Yau threefolds. The resulting geometry completely agrees with that of recent w orks, which are based on the technique of N = 1 confining phase superpotent ials. We also derive the Seiberg-Witten geometry for E-7 gauge theories wit h massive fundamental hypermultiplets.