Page:Essays in librarianship and bibliography.djvu/289

 Rh years. But much more may be said, for, whether in the form of swinging door or sliding-press, the principle of expansion in situ can undoubtedly be carried out through the greater part of the Old Library, as well as in the basement of the New. What additional space this would afford, I have not endeavoured to estimate. Another immense advantage connected with the system is the facility it offers of gradual expansion. Any other enlargement requires new building; new building requires a large sum to be raised by a great effort of rating, borrowing, or subscribing; and too frequently the adjoining ground is preoccupied, and must be acquired at a great additional expense. Fifty thousand pounds would, I believe, be a very moderate estimate for such accommodation, if obtained by building, as the Museum gets from the sliding-press for £15,000, supposing even that the ground were free to build upon. In our case, however, this ground must have been purchased. We may well imagine the Trojan siege we should have had to lay to the Treasury, to obtain the money; the delays of building when this was eventually forthcoming; and the fearful inconvenience which would have existed meanwhile. Now we simply put down a sum in the annual estimates for as many sliding-presses as are likely to be required during the ensuing financial year, introduce them wherever they seem to be necessary, and hope to