BIBLIOGRAPHY OF PUBLICATIONS. 37 



Peters W. J. Results of dip-of-horizon measurements made on the Galilee and Carnegie, 1907- 



1917. Terr. Mag., vol. 23, No. 2, 47-60 (June 1918). 

 Preiser, Samuel A. See Davenport, Charles B. 

 Rankin, G. A., and H. E. Merwin. The ternary system MgO-Al203-Si02. Amer. Jour. Sci,. 



vol. XLV, 301-325 (1918). 

 Raymond, H. The principal axes of distribution of stellar motion. Astron. Jour., No. 718 



(Sept. 1917). 

 Richards, H. M. Determination of acidity in plant tissue. Mem. Torr. Bot. Club, vol. 17, 



241-245 (1918). 

 Richards, T. W., and Victor Yngve. The transition temperatures of strontium chloride and 



strontium bromide as fixed points in thermometry. Jour. Amer. Chem. Soc, vol. xl, 89-95 



(Jan. 1918). 

 , . The solubility of sodium sulphide as a means of determining temperatures. 



Jour. Am.er. Chem. Soc, vol. xl, 164-174 (Jan. 1918). 

 Riddle, Oscar. A case of hereditary ataxia (?) in pigeons. Proc. Soc. Exp. Biol, and Med., 



vol. XV, No. 4, 56-58 (Jan. 1918). 

 . Further observations on the relative size and form of the right and left testes of pigeons 



in health and disease and as influenced by hybridity. Anat. Rec, vol. xiv. No. 5, 283-334 



(May 1918). 

 . A demonstration of the origin of two pairs of identical female twins from two ova 



of high storage metabolism. Jour. Exper. Zool. vol. 26, No. 2, 227-254 (July 1918). 

 , and Carl E. Anderson. Studies on the physiology of reproduction in birds: VIII. 



The effects of quinine on the production of egg yolk and egg albumen. Amer. Jour. Physiol., 



vol. xLvi, 92-102 (Sept. 1918). 

 , and J. Arthur Harris. Note on the relation of blood fat to sex, and the correlation 



between blood fat and egg production in the domestic fowl. Jour. Biol. Chem. vol. xxxiv, 



No. 1, 161-170 (Apr. 1918). 

 , and Mathilda L. Koch. Chemical composition of the brain of normal and ataxic (?) 



pigeons. Amer. Jour. Physiol., vol. xlvi, 124-136 (Sept. 1918). 

 -, and Victor K. liA Mer. Post-mortem melanin pigment formation in pigmentless retinas 



and choroids of white ring-doves. Amer. Jour. Physiol., vol. xlvi, 10.3-123 (Sept. 1918). 

 Ritchey, George W. Nova in spiral nebulae. Pubs. A. S. P., vol. 29, 210-212 (1917). 



. A nebulous ring about Nova Persei. Pubs. A. S. P., vol. 29, 256 (1917). 



. Another faint nova in the Andromeda nebula. Pubs. A. S. P., vol. 29, 257 (1917). 



. Three additional novEe in the Andromeda nebula. Pubs. A. S. P., vol. 30, 162 (1918). 



. The small nebulous ring about Nova Persei. Pubs. A. S. P., vol. 30, 163 (1918). 



Roth, Paul. See Benedict, Francis G. 



Roy, Arthur J. Collimation of the Olcott meridian circle. Astron. Jour., No. 720 (Sept. 1917). 



Sarin, Florence R. Preliminary note on the differentiation of angioblasts and the method by 



which they produce blood-vessels, blood-plasm, and red blood-cells, as seen in the living 



chick. Anat. Rec, vol. xiii, 199-204 (1917). 

 . Franklin Paine Mall: A review of his scientific achievement. Science, n. s., vol. xlvii, 



No. 1211, 254-261 (1918). 

 Schultz, Adolf H. Anthropologische Untersuchungen an der Schadelbasis. Inaug. Diss., 



Braunschweig (1917). 



, Studies in the sex-ratio in man. Biol. Bull., vol. xxxiv, 257-275 (1918). 



. The position of the insertion of the pectoralis major and deltoid muscles on the humerus 



of man. Amer. Jour. Anat , vol. xxiii, 155-173 (1918). 

 . The fontanella metopica and its remnants in an adult skull. Amer. Jour. Anat., vol. 



xxiii, 259-271 (1918). 

 . Relation of the external nose to the bony nose and nasal cartilages in whites and negroes. 



Amer. Jour. Physical Anthropol., vol. i (1918). 

 Seares, Frederick H. The spiral of obscuration. Comments on Professor Turner's reply. 



Astrophys. Jour., vol. 46, 232-237 (1917); Mt. Wilson Contr., No. 139. 

 . The brightness of the stars — their distribution, colors, and motions. Pubs. A. S. P., 



vol. 30, 99-132 (1918). 

 . Magnitudes and colors of three faint stars of large proper motion. Pubs. A. S. P., 



vol. 30, 191-192 (1918). 

 -, Adriaan van Maanen, and Ferdinand Ellerman. The location of the sun's mag- 



netic axis. Proc. Nat. Acad. Sci., vol. iv, 4-8 (1918) ; Mt. Wilson Communications, No. 50. 



. See Hale, George E. 



Shapley, Harlow. Studies based on the colors and magnitudes in stellar clusters: Sixth paper. 



On the determination of the distance of globular clusters. Astrophys. Jour., vol. 48, 89 



(1918); Mt. Wilson Contr., No. 151. 

 . Studies based on the colors and magnitudes in stellar clusters: Seventh paper. The 



distances, distribution in space, and dimensions of 69 globular clusters. Astrophys. Jour., 



vol. 48, 154 (1918); Mt. Wilson Contr., No. 152. 



