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 Sept., 1909 CORRESPONDENCE 177 represented, the author suggests that a change in physiographic conditions may be called into account. Thus a forested area, more like the jungles of India, may have preceded the present-day treeless condition. As the latter condition became prevalent, conspicuous birds dependent upon cover would naturally fall prey to such animals as the coyotes. It is, of course, not known that Pavo califor- n/cus was ornately endowed, as in the existing peacocks. But the inference is that it was. Unless the feather development could be adapt- ed or modified, it would become an impediment to eursorial power. In this connection Mr. Miller asserts his belief that the great length of the reetriees in the Roadrunner are "unques- tionably of use in guiding the swift movements of the bird in its efforts to escape enemies, or in pursuit of its active prey." Our own ob-. servations would scarcely lead to this conclu- sion, altho we would hesitate to ascribe any other function to the Roadrunner's elongated tail.--J. O. CORRESPONDENCE Editor THE ConDOR: The July-August number of THE CONDOR was received a day or two ago and I noted among the editorials one in which you state the need of a new manual of colors, and the bad state of your copy of Ridgway's Nomen- clature. I have just received today a book called: Code des Couleurs, a Pusage des Naturalistes, Artistes, Commercants et Industriels. 720 chantillons de couleurs classes d'apres la mthode Chevreul simplifie, par Paul Klinck- sieck et Th. Valette; Paris, 1908. It can be had from G. E. Stechert & Co., 129-133 West 20th St., New York, for $2.58 postpaid. I think it is a better color book than Ridg- way's, barring the fact that it is written in French and has a different color nomenclature. The book has 25 plates of blockt colors, like Ridgway's, 720 blocks. "Ce Code doitsa naissa. nce aux Champignons. Malgr ce point de dpart, son application n'est nullement limite ace sujet; il doit au contraire trouver son emploi dans toute circon- stance ou 1 'on a besoin de pr&iser une dsigna- tion de couleur." There are 32 pages of text in which is taken up: (Pt.I) 1. Originedu Code des Couleurs. 2. Mode d'emploi du C. C. 3. Solidit des Couleurs et du paplet du C. C.; and (Pt. II) 1. des couleurs au point de rue physique. 2. Sources de lumiere.--Lumieres color,es. 3. coulenrs matrielles ou pigments colors. 4. Classification des couleurs. 5. Code des Couleurs a Pusage des naturalistes. 6. Con- fection du Code des Couleurs. 7. Examen des couleurs complmentaires. Contrastes. The colors are on heavy paper, and I think the book is more durable than Ridgway's. There are 62 colors under vert bleu. The system of numbering is just as convenient and sensible as Ridgway's names. There is nothing, I think, significant or advantageous in writing Van Dyke Brown instead of Orange 118. The authors express the hope that some sys- tem of color nomenclature may become inter- national, and I don't see why a system like this is not pretty good. F. GRINNELL, JR. Pasadena, Calif., July 27, 1909. Directory of Members of the Cooper Ornithological Club Revised to August 1, 1909. (Residence in California unless otherwise stated'. Year following address indicates date of election.) HONORARY IEMBERS Belding, l,ynmn, Stockton. 1896. Merriam, Dr. C. Hart, 1919 16th St., Washing- ton, D.C. 1909. Ridgway, Robert, 3413 13th St., N. E., Brook- land, D.C. 1905. ACTIVE ME3dBERS Adams, Ernest, Box 21, Clipper Gap, Placer Co. 1896. Alexander, Annie M., 1006 16th St., Oakland. 1908. Anderson, Malcolm P., Menlo Park. 1901. Appleton, J. S., Simi, Ventura Co. 1901. Arnold, Dr. Ralph, 726 H. W. Hellman Bldg., Los Angeles. 1893. Bade, Wm. Frederic, 2616 Colleg e Ave., Berke- ley. 1903. Bailey, Henry F., 94 Pacific Ave., Santa Cruz. 1902. Bailey, H. H, 321 54th St., Newport News, Va. 1903. Bailey, Vernon, Dept. of Agriculture, Washing- ton, D.C. 1904. Bales, Dr. B. R., 151 West Main St., Circleville, Ohio. 1906. Barnes, R. Magoon, Lacon, Ill. 1908. Barrows, Prof. Walter B., Box 183, East Lansing Mich. 1909. Bay, J. Cliff, Ingot, Shasta Co. 1903. Beal, Prof. F. E. L., Dept. Agricultu?e, Wash- ington, D.C. 1904. Beck, Rollo H., Berryessa. 1894. Bennett, R. H., Room 503, 149 California St., San Francisco. 1909. Bent, A. C., Taunton, Mass. 1909. Birdseye, Clarence, Biological Survey, Wash- inton, D.C. 1909. Bishop, Dr. Louis B., 356 Orange St., New Haven, Conn. 1904. Black, Lester, Bloomington, Ind. 1908.