(Continued from page 3 of Cover.) 



VOLUME 39. 



1. Richards, T. W., and Bonnet, F., Jh. — 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. 37^7. 



1 pi. July, 1903. 15c. 



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



aniline. pp. 49-66. 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. Noyes, A. A., and Coolidge, W. D. — The Electrical Conductivity of Aqueous Solutions at 



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

 sium Chloride up to W^. pp. 161-219. 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. 243-256. 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. Petrce, 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. MoElpresh, 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. 



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



374. February, 1904. 35c. 



17. Petrce, B. O. — On Generalized Space Differentiation of the Second Order, pp. 375-386. 



February, 1904. 15c. 



18. PrERCB, G. W. — On the Cooper Hewitt Mercury Interrupter, pp. 387^112. 3 pis. Feb., 1904. 45c. 



19. Coffin, J. G. — Edge Corrections in the Calculation of the Absolute Capacity of Condensers. 



pp. 413-437. April, 1904. 35c. 



20. Peters, A. W. — Metabolism and Division in Protozoa, pp. 439-516. April, 1904. 80c. 



21. Morse, H.W. — Spectra from the Wehnelt Interrupter, pp. 517-544. 3 pis. April, 1904. 65c. 



22. Packard, A. S. — Studies on the Transformations of Saturnian Moths, with Notes on the Life- 



History and Affinities of Brahmaea japonica. pp. 545-578. June, 1904. 35c. 



23. Richards, T. W. — The Significance of Changing Atomic Volume. IV. — The Effects of Chemi- 



cal and Cohesive Internal Pressure, pp. 579-004. June, 1904. 30c. 



