158 FRANK C. BECHT AND JAMES R. GREER 



30. MIONI, Compt. rend, de la Soc. Biol., 1903, 55, p. 1592. 



31. MORGENROTH UND STERTZ, Arch. f. Path. Anat., 1907, 188, p. 167. 



32. MUIR AND BROWNING, Jour. Hyg., 1906, 6, p. 20. 



33. NEUFELD UND TOPLER, Centralbl.f. Bakt., 1905, 38, p. 456. 



34. NUTTALL, Ztschr.f. Hyg., 1888, 4, p. 353. 



35. OPIE, Jour. Exp. Med., 1907, 9, p. 515. 



36. PAGANO, Arch. Ital. di Biol., 1894, 20, p. no. 



37. PICK, cited by Kohler. 



38. PRUDDEN, Med. Rec., 1890, 37, p. 88. 



39. RlCKETTS AND GOMEZ, Jour. Infect. Dis., 1908, 5, p. 221. 



40. STRAUS UND WOLF, Fortschr. d. Med., 1902, 20, p. i. 



41. TEDESCHI, Jour. Med. Res., 1908, 19, p. 237. 



42. WASSERMAN UND PLAUT, Deutsch. med. Wchnschr., 1906, 32, p. 1769. 



43. WIDAL, Compt. rend, de la Soc. Biol., 1897, 27, p. 7. 



44. WRIGHT AND DOUGLAS, Lancet, 1904, 2, p. 411. 



45. WRIGHT AND REID, Proc. Roy. Soc., London, 1906, B, 77, p. 194. 



