But here another suggestion arises. Water is necessary and infinitely pleasant in a hot country and a hot place like this domed sacristy. But we have very, oh, so very, little of it in Florence! We cannot even, however great our love and reverence, offer Our Lady and the Angels the thinnest perennial spurt; we must let out the water only for bare use, and turn the tap off instantly after. There is something very disappointing in this; and the knowledge of that dearth of water, of those two taps symbolical of chronic drought, is positively disheartening. Beautiful proportions, delicate patterns, gracious effigies of the Madonna and the angels we can have, and also the most lovely garlands. But we cannot have a fountain. For it is useless calling this a fountain, this poor little trough with two taps.... But you _shall_ have a fountain! Giovanni della Robbia answers in his heart; or, at least, you shall _feel_ as if you had one! And here we may witness, if we use the eyes of the spirit as well as of the body, one of the strangest miracles of art, when art is married to a purpose. The idea of a fountain, the desirability of water, becomes, unconsciously, dominant in the artist's mind; and under its sway, as under the divining rod, there trickle and well up every kind of thought, of feeling, about water; until the images thereof, visible, audible, tactile, unite and steep and submerge every other notion. Nothing deliberate; and, in all probability, nothing even conscious; those watery thoughts merely lapping dreamily round, like a half-heard murmur of rivers, the waking work with which his mind is busy. Nothing deliberate or conscious, but all the more inevitable and efficacious, this multifold suggestion of water.