Page:Condor21(5).djvu/44

 AVIFAUNA No. 13 Second Ten Year Index to The Condor By J. R. PEMBERTON 92 pages and cover A thorough-going index to the large mass of ornithology comprizeal in volumes XI to XX, inclusive, of T CoNtrol. Segregates the informa- tion by species under all the different names employed; also by authors; by states and countries, in California by counties, and by subject-matter. Obviously indispensable to every live student of birds. The management urges prompt orders, so that the heavy expense involved in the publication of this number of the Avifauna series may be met without the necessity of curtailing the size of the current issues of T CoNo. Members of the Cooper Ornithological Club may take the regular Club discount (50o). Price, prepaid, $3.00 [To Club members, 1.50] W. LEE CHAMBERS, Business Manager Eagle Rock, Los Angeles County, California