Front Page Titles (by Subject) XCII: Trajan to Pliny - Letters of Marcus Tullius Cicero
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XCII: Trajan to Pliny - Marcus Tullius Cicero, Letters of Marcus Tullius Cicero 
Letters of Marcus Tullius Cicero: with his Treatises on Friendship and Old Age, trans. E.S. Shuckburgh. And Letters of Gaius Plinius Caecilius Secundus, trans. William Melmoth, revised by F.C.T. Bosanquet (New York: P.F. Collier, 1909).
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Trajan to Pliny
I would have you proceed, my dearest Secundus, in carefully examining whether the ground you suspect is firm enough to support an aqueduct. For I have no manner of doubt that the Sinopian colony ought to be supplied with water; provided their finances will bear the expense of a work so conducive to their health and pleasure.