(Continued from piuje 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, 11)03. 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. AY. — The Anomalous Dispersion, Absorption, and Surface Color of Nitroso-dimethyl- 



aniliue. pp. 49-66. 3 pis. August, 1903. 35c. 



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



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

 C. Davenport, C. B. — Comparison of Pecteu 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 



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

 sium Chloride up to 306°. 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. 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. 



