(Continued from page 3 of Cover.) 



VOLUME 39. 



1. Richards, T. W., and Bonnet, F., Jr. —The Changeable Hydrolytic Equilibrium of Dis- 



solved Chromic Sulphate, pp. 1-30. June, 1903. 35c. 



2. Lyman, T. — On the Prolongation of Spectral Lines, pp. 31-35. 1 pi. July, 1903. 10c. 



3. Lyman, T. — An Explanation of the False Spectra from Diffraction Gratings, pp. 37-47. 



1 pi. July, 1903. 15c. 



4. Wood, R. W. — The Anomalous Dispersion, Absorption, and Surface Color of Nitroso-dimethvl- 



aniliue. pp. 49-GG. 3 pis. August, 1903. 35c. 



5. Greenman, J. M. — New and otherwise Noteworthy Angiosperms from Mexico and Central 



America, pp. 67-120. September, 1903. 50c. 



6. Davenport, C. B. — Comparison of Pecten opercularis from three Localities of the British 



Isles, pp. 121-159. November, 1903. 75c. 



7. Notes, A. A., and Coolidge, W. D. — The Electrical Conductivity of Aqueous Solutions at 



Higli Temperatures. — I. Description of the Apparatus. Results with Sodium and Potas- 

 sium Chloride up to 306 3 . pp. 1G1-219. November, 1903. 80c. • 



8. Castle, W. E. — The Laws of Heredity of Galton and Mendel, and some Laws governing Race 



Improvement by Selection, pp. 221-242. November, 1903. 30c. 



9. Baxter, G. P. — A Revision of the Atomic Weight of Iron. Second paper. The Analysis of 



Ferrous Bromide, pp 243-25G. November, 1903. 20c. 



10. Carlton, F. C. — The Color Changes in the Skin of the so-called Florida Chameleon, Anolis 



carolinensis Cuv. pp. 257-276. 1 pi. December, 1903. 25c. 



11. Johnston, J. R. — A Revision of the Genus Flaveria. pp. 277-292. December, 1903. 20c. 



12. Peirce, B. O. - On the Lines of Certain Classes of Solenoidal or Lamellar Vectors, Symmetrical 



with Respect to an Axis. pp. 293-304. December, 1903. 15c. 



13. Taber, H. — On the real Automorphic Linear Transformation of a real bilinear Form. pp. 



305-320. January, 1904. 20c. 



14. McElpresh, W. E. — Influence of Occluded Hydrogen on the Electrical Resistance of Palla- 



dium, pp. 321-335. January, 1904. 15c. 



15. Hall, E H. — Experiments on the Deviations of Falling Bodies, pp. 337-349. Jan., 1904. 15c. 

 1G. McKay, T. C. —On the Relation of the Hall Effect to the Current Density in Gold pp. 351- 



374. February, 1904. 35c. 



17. Peirce. B. O. — On Generalized Space Differentiation of the Second Order, pp 375-3S6. 



February, 1904. 15c. 



18. Pierce, G. W. — On the Cooper Hewitt Mercury Interrupter, pp. 387-412. 3 pis. Feb., 1904. 45c. 



