Note 2 — Chapter II · THE LIBRARY

Mr. William Blades, in his “Enemies of Books” (Trübner, 1880), decries glass-doors,—“the absence of ventilation will assist the formation of mould.” But M. Rouveyre bids us open the doors on sunny days, that the air may be renewed, and, close them in the evening hours, lest moths should enter and lay their eggs among the treasures. And, with all deference to Mr. Blades, glass-doors do seem to be useful in excluding dust.