VOLUME 38. 



1. Mabery, C. F. — An Apparatus for Continuous Vacuum T>-" illation, pp. 1-6. June, 1902. 10c. 



2. Thaxter, R. — Preliminary Diagnoses of New " ..of Laboulbeniaceae. — V. pp. 7-58. 



June, 1902. 45c. 



3. Johnston, J. R. — On Cauloglossum transversarium Fries (Bosc). pp. 59-74. 1 pi. July, 



1902. 20c. 



4. Robinson, B. L. (With the collaboration of specialists.) — Flora of the Galapagos Islands. 



pp. 75-270. 3 pis. October, 1902. $2.40. 



5. Richards, T. W. — Concerning Gas- Analysis by Measurement in Constant Volume under 



Changing Pressure, pp. 271-279. October, 1902. 10c. 



6. Mabery, C. F., and Shepherd, L. — A Method for Determining the Index of Refraction of Solid 



Hydrocarbons with the Pulf rich Refractometer. Index of Refraction of the Solid Hydro- 

 carbons in Petroleum, pp. 281-290. October, 1902. 10c. 



7. Richards, T. W.— The Significance of Changing Atomic Volume. III. —The Relation of 



Changing Heat Capacity to Change of Free Energy, Heat of Reaction, Change of Volume, 

 and Chemical Affinity, pp. 291-317. October, 1902. 35c. 



8. Richards, T. W., and Stttll, W. N. — The Speed and Nature of the Reaction of Bromine 



upon Oxalic Acid. pp. 319-337. October, 1902. 25c. 



9. Dunkel, O. — Regular Singular Points of a System of Homogeneous Linear Differential 



Equations of the First Order, pp. 339-370. October, 1902. 50c. 



10. Porter, R. A. — The Influence of Atmospheres of Nitrogen and Hydrogen on the Arc Spectra 



of Iron, Zinc, Magnesium, and Tin, Compared with the Influence of an Atmosphere of 

 Ammonia, pp. 371-379. November, 1902. 15c. 



11. Palache, 0.| and Fraprdz, F. R. — 1. Babingtonite from Somerville, Mass. 2. Babingtonite 



from Athol, Mass. pp. 381-393. 2 pis. December, 1902. 25c. 



12. Crew, H, and Baker, J. C. — On the Thermal Development of the Spark Spectrum of Carbon. 



pp. 395-406. December, 1902. 15c. 



13. Richards, T. W., and Stull, W. N. — The Universally Exact Application of Faraday's Law. 



pp. 407-413. December, 1902. 10c. 



14. Richards, T. W., and Mark, K. L. — An Apparatus for the Measurement of the Expansion 



of Gases by Heat under Constant Pressure, pp. 415-428. December, 1902. 20c. 



15. Richards, T. W., and Wells, R. C— The Transition Temperature of Sodic Sulphate Referred 



anew to the International Standard, pp. 429-440. December, 1902. 15c. 



16. Richards, T. W., and Archibald, E. H. — A Revision of the Atomic Weight of Caesium. 



pp. 441-470. January, 1903. 35c. 



17. Van der Vrles, J. N. — On the Multiple Points of Twisted Curves, pp. 471-532. 1 pi. 



January, 1903. 75c. 



18. Castle, W. E.— Mendel's Law of Heredity, pp. 533-548. January, 1903. 20c. 



19. Peirce, B. O. — On the Temperature Coefficients of Magnets made of Chilled Cast Iron. 



pp. 549-556. February, 1903. 10c. 



20. Nichols, E. F., and Hull, G. F. — The Pressure due to Radiation, pp. 557-599. April, 



1903. 60c. 



21. Castlf, W. E., and Allen, G. M. —The Heredity of Albinism, pp. 601-622. Apr., 1903. 25c. 

 2i:. Morse, H. W., and Pierce, G. W. — Diffusion and Supersaturation in Gelatine, pp. 623-648. 



May, 1903. 40c. 



23. 1'eirce, B. O. — On the Thermal Conductivities of Certain Pieces of Rock from the Calumet 



and Hecla Mine. pp. 649-660. May, 1903. 15c. 



24. Peirce, B. O. — On Families of Curves which are the Lines of Certain Plane Vectors either 



Solenoidal or Lamellar, pp. 661-678. May, 1903. 20c. 



25. Trowbridge, J. — The Spectra of Gases and Metals at High Temperatures, pp. 679-688. 



1 pi. May, 1903. 20c. 



26. Records of Meetings ; Biographical Notices ; Officers and Committees ; List of Fellows and 



Foreign Honorary Members ; Statutes and Standing Votes, etc. 60c. 



(Continued on page 3 of Cover.) 



