III. CENTRIFUGATION 101 



3. Maclnnes, D. A., W. J. Archibald, J. W. Beams, W. B. Biidgman, A. 



Rothen, and J. W. Williams, Ann. N. Y. Acad. Sci., 43, 173 (1942) 

 (conference on ultraccntrifuge). 



4. Pickels, E. G., Chem. Revs., 30, 341 (1942) (general discussion; optical 



system). 



5. Svedberg, T., Chem. Revs., 20, 81 (1937) (principles and applications of 



oil-driven ultracentrif uge) . 



G. Bauer, J. H., and E. G. Pickels, /. Exptl. Med, 65, 5()5 (1937) (air- 

 driven, air-supported ultracentrifuge). 



7. Pickels, E. G., Rev. Sci. Instruments, 13, 426 (1942) (cell design). 



S. Beams, J. W., J. Wash. Acad. Sci., 37, 221 (1947) (magnetic and air 

 support, electrical and air drives). 



9. Svedberg, T., and J. B. Nichols, /. Am. Chem. Soc, 45, 2910 (1923) 

 (first optical ultracentrifuge). 



10. Skarstrom, C., and J. W. Beams, Rev. Sci. Instruments, 11, 398 (1940) 



(electrical drive, magnetic support). 



11. Pickels, E. G., Rev. Sci. Instruments, 9, 358 (1938) ("turret" type air 



drive and support bearing). 



12. Svedberg, T., and A. Lysholm, Nova Acta Regiae Soc. Sci. Vpsaliensis, 



vol. extra, ord. (1927) (first oil-driven ultracentrifuge). 



13. Boestad, G., K. O. Pedersen, and T. Svedberg, Rev. Sci. Instruments, 9, 



346 (1938) (modern oil-driven ultracentrifuge). 



14. Svedberg, T., and B. Sjogren, /. .4m. Chem. Soc, 51, 3594 (1929) 



(equilibrium centrifuge) . 

 1.5. Henriot, E., and E. Huguenard, /. phys. radium, 8, 433 (1927) (original 

 air-driven "top"). 



16. Beams, J. W., E. G. Pickels, and A. .J. Weed, /. Chem. Phys., 2, 143 



(1934) (optical centrifuge of "spinning top" type). 



17. Beams, J. W., and E. G. Pickels, Rev. Sci. Instruments, 6, 299 (1935) 



("spinning tops" and early vacuum centrifuges). 



15. Stern, K. G., Science, 95, 561 (1942) (small plastic ultracentrifuge). 

 1.9a. Pickels, E. G., and J. W. Beams, Science, 81, 342 (1935). 



19b. McBain, J. W., and A. H. Lewis, /. Phys. Chem., 43, 1197 (1939); 

 Science, 89, 611 (1939) (spinning top). 



19r. Nichols, J. B., and E. D. Bailey, "Determinations with the ultracen- 

 trifuge," in Physical Methods of Organic Chemistry, 2nd ed. A. Weiss- 

 berger, ed. Interscience, New York, 1949, chap. XIII. 



OPTICAL METHODS 



20. Svedberg, T., and H. Rinde, J. Am. Chem. Soc, 46, 2677 (1924) (light 



absorption method) . 



21 . Philpot, J. St. L., Nature, 141, 283 (1938) (cylindrical lens method). 



22. Andersson, K. J. I., Nature, 143, 720 (1939) (cylindrical lens method). 



23. Svensson, H., KoUoid-Z., 90, 141 (1940) (cylindrical lens method). 



