30 MARCH 1907, Page 16

MR. WALTER ROTHSCHILD'S WORK ON • EXTINCT BIRDS. .

[To TER EDITOR Or TEE SPECTATOR:1 SIE,—I write to thank you for the extremely flattering notice, in your issue of last week, of my forthcoming book on "Extinct Birds." I trust, however, you will not be offended if I ask you to put in your next issue an additional notice. My reason is this ; it is quite erroneous on the part • of certain newspapers to state that the publication of the work has cost me £20,000. The preparation of this work has not cost even a fourth of that sum, and the actual printing of plates and text will only amount to £2,100. Of course, the actual value of the various collections in the Tying Museum is a quite separate item which ought never to have been included in the estimate of cost, as they were got together for other purposes than the preparation of this work—I am,