DETERMINATION OF ATOMIC WEIGHTS 531 



13. Berthelot, Compt. rend. 1907, 144, 76, 194, 269, 352 ; 145, 317. 



14. Guye, J. chim. phys. 1907, 5, 203. A review of work done up to 1907 on 



densities of gases. 



15. and others, Mem. Soc.phys. et hist. nat. Geneve, 1908, 35, 548-694. 



16. BAUME, /. chim. phys. 1908, 6, I. 



17. and Perrot, ibid. 1908, 6, 610. 



18. GUVE, ibid. 1908, 6, 769. A review of all the physical methods published. 



19. Baume and Perrot, ibid. 1909, 7, 369. 



20. GRAY and BURT, Chem. Soc. Trans. 1909, 95, 1633 ; Trans. Faraday Soc. 



191 1, 7, 30. 



21. LEDUC, Ann. chim. phys. 1910 (viii), 19, 441. 



22. Guye,/. chim. phys. 1910, 8, 222. 



23. Ter Gazarian, ibid. 1909, 7, 337 ; 191 1, 9, 101. 



24. Scheuer, ibid. 1910, 8, 289. 



25. Morley, Smithsonian Contributions, 1895, No. 29. 



26. Ladenburg, Ber. 1902, 35, 2275. 



27. No-yes,/. Amer. Chem. Soc. 1907, 29, 1718. 



28. and Weber, ibid. 1908, 30, 13. 



29. Richards and Wells, ibid. 1905, 27, 459. 



30. and Forbes, ibid. 1907, 29, 808. 



31. Koethner and Tiede, ibid. 1909, 31, 6. 



32. and Staehler, ibid. 1907, 29, 623. 



33. and Willard, ibid. 19 10, 32, 4. 



34. Edgar, Phil. Trans. 1908, 209, A, 1. 



35. Guye and Fluss,/. chim. phys. 1908, 6, 732. 



36. and DROUGININE, ibid. 1910, 8, 473. 



yj. Staehler and Meyer, Zeitsch. anorg. Chem. 191 1, 71, 378. 



38. WOURTZEL, Compt. rend. 191 2, 154, 115. 



39. Gray, Chem. Soc. Trans. 1905, 87, 1601. 



40. Guye and Bogdan, Compt. rend. 1904, 138, 1494 ; /. chim. phys. 1905, 3, 537. 



