18 CARNEGIE INSTITUTION OF WASHINGTON. 



No. 277 — continued. 



Doan, Charles A. — The Circulation of the Bone Marrow. (Contribution No. 67.) 



19 pages, 1 plate, 3 text-figurea. 

 Congdon, E. G. — Transformation of the Aortic-Arch System during the Develop- 

 ment of the Human Embryo. (Contribution No. 68.) 64 pages, 3 plates, 28 

 text-figures. 

 Streeter, George L. — Development of the Auricle in the Human Embryo. (Con- 

 tribution No. 69.) 28 pages, 6 plates, 8 text-figures. 

 WooUard, H. H. — The Development of the Principal Arterial Stems in the Fore- 

 limb of the Pig. (Contribution No. 70.) 16 pages, 2 plates. 

 Finley, Ellen B. — Development of the Subcutaneous Vascular Plexus in the Head 

 of the Human Embryo. (Contribution No. 71.) 7 pages, 2 plates, 2 text- 

 figures. 

 No. 299. Burnett, E. C. Letters of Members of the Continental Congress. Vol. II: July 



5, 1776, to December 31, 1777. Octavo, xxxviii-f-638 pages. 

 No. 310. Barus, Carl. Interferometer Experiments in Acoustics and Gravitation. Part II. 



Octavo, viii4-113 pages, 169 figures. 

 No. 312. Papers from the Department of Marine Biology of the Carnegie Institution of 

 Washington. Vol. XVII. Octavo, vi -1-181 pp., 11 pis., 140 figs. 

 This book contains the following papers: 

 Tennent, David H. — Studies of the Hybridization of Echinoids. 42 pages, 3 plates, 



28 figures. 

 Harvey, E. Newton. — The Production of Light by the Fishes Photoblepharon and 



Anomalops. 18 pages. 

 Mayor, Alfred G. — Hydrogen-ion Concentration and Electrical Conductivity of 



the Surface Water of the Atlantic and Pacific. 26 pages, 3 charts. 

 Wells, Roger C. — The Carbon-Dioxide Content of Sea- Water at Tortugas, Florida. 



8 pages, 1 figure. 

 Phillips, Alexander H. — Analytical Search for Metals in Tortugas Marine Organ- 

 isms. 6 pages. 

 Mayor, Alfred G. — Tracking Instinct in a Tortugas Ant. 8 pages. 

 Fowler, Henry W., and Charles F. Silvester.— A Collection of Fishes from Samoa. 



18 pages, 2 figures. 

 Treadwell, A. L. — Leodicidffi from Fiji and Samoa. 44 pages, 8 plates, 68 figures. 

 Treadwell, A. L. — Polychsetous Annelids collected at Friday Harbor, Washington, 

 in February and March, 1920. 12 pages, 37 figures. 

 No. 322. Hay, Oliver P. The Pleistocene of North America and its Vertebrated Animals from 

 the States East of the Mississippi River and from the Canadian Provinces East 

 of Longitude 95°. Octavo, 507 pages, 41 maps, 25 text-figures. 

 No. 323. Joslin, E. P. Diabetic Metabolism with High and Low Diets. Octavo, vni-(-334 



pages. 

 No. 324. Benedict, Francis G., and Ernest G. Ritzman. Undernutrition in Steers: Its 

 Relation to Metabolism, Digestion, and Subsequent Realimentation. Octavo, 

 viii-t-333 pages, 42 figures. 

 No. 325. Spoehr, H. A., and J. M. McGee. Studies in Plant Respiration and Photosynthesis. 



Octavo, iv-|-98 pages. 

 No. 326. Hall, Harvey M., and Frederic E. Clements. The Phylogenetic Method in Tax- 

 onomy: A Monograph of the North American Species of Artemisia, Chrysotham- 

 nus, and Atriplex. Quarto, iv-f-355 pages, 58 plates, 47 figures. 

 No. 327. Bridges, C. B., and T. H. Morgan. The Third Chromosome Group of Mutant 

 Characters of Drosophila melanogaster. Octavo, x-|-251 pages, 3 plates, 37 figs. 

 No. 328. Metz, Charles W., Mildred S. Moses, and Eleanor D. Mason, Genetic Studies on 

 Drosophila virilis, with Considerations on the Genetics of other Species of 

 Drosophila. (Paper No. 34, Department of Genetics.) Octavo, 94 pages, 5 

 plates, 17 figures. 

 No. 330. Hackett, C. W. Historical Documents relating to New Mexico, Nueva Vizcaya, 

 and Approaches thereto, 1538-1773. Collected by Adolph F. A. Bandelier and 

 Fanny R. Bandelier. Vol. 1, Octavo, xx-|-502 pages. 

 No. 336. Clements, Frederic E., and Frances L. Long. Experimental Pollination. An 

 Outline of the Ecology of Flowers and Insects. Octavo, vii-h274 pages. 



