Letters, Announcements, ^c. 255 



Gentlemen, — I send you the following note on Dr. B. 

 Radakoff^s recently published Hand- Atlas ^, believing that it 

 will not be uninteresting to the readers of ' The Ibis ' : — 



About a week ago I was informed of the issue of the above 

 work ; and I received the first seven sheets to day. These in- 

 clude two title-pages, introduction (one page) , four sheets of 

 the Atlas, being four maps of Europe, Asia, and Africa on 

 Mercator^s projection, the whole elephant-folio size, and open- 

 ing at the end. The land is shown edged with blue; and all 

 the principal towns, rivers, mountains, &c. are shown. Upon 

 these four maps there are marked the respective geographical 

 ranges of Tinnunculus alaudarius, Tetrao bonasia, Tetrao 

 tetrix, and Upupa epops, in red, thus : — 



(1) Zur Bezeichnung der Gegenden im denen die Art 

 nistet . . . _ IIIIIIIIIIIIIIII 



(2) Zur Bezeichnung der Gegenden welche die Art bloss 

 durchzieht =- = - = 



(3) Zur Bezeichnung der Gegenden in denen die Art nur 

 iiberwintert xxxx 



(4) Zur Bezeichnung der Gegenden in denen man mit 

 Wahrscheinliclikeit das Vorhandensein einer Art voraussetzen 

 kann, obgleich dafiir keine literarischen Beweise existiren. 



The work is to be continued, I understand, upon the same 

 plan, giving a map for each of the species, and is issued by 

 A. Lang of Moscow. As a valuable addition to our know- 

 ledge of geographical distribution, this exhaustive work should 

 be in the library of every student of the subject. 



My object in sending you this notice is not only that I 

 may draw general attention to it, but also to point out that 

 a series of papers, upon which I have myself been engaged, 

 seem to me to supplement in an admirable way this larger and 

 more elaborate work ; and the symbols used by me, if added 

 to those upon the maps, could be easily utilized to show the 

 more minute particulars of distribution in minor areas upon 

 a larger scale. I would in this connexion refer you to the 

 following papers by me : — 



* Hand-Atlas der geogr. Ausbreitung der im europaisclien Russlaud 

 iiistenden Vogel, zusammengestellt von Dr. B. Radakotf (H. Berghaus's 

 \tlas der Thier-Geograpliie). First 7 sheets. Moscow: 1876. 



