[113] Heim (Arb. a. d. Kais. Gesundheitsamte, 1889, 5:303) finds it capable of living from 20-30 days in milk.

[114] Schüder (Zeit. f. Hyg., 1902, 38:34) examined the statistics of 638 typhoid epidemics. He found 71 per cent. due to infected drinking water, 17 per cent. to infected milk, and 3.5 per cent. caused by other forms of food.

[115] Kitasato. Arb. a. d. Kais. Gesundheitsamte, 1:470.

[116] Simpson, London Practitioner, 1887, 39:144.

[117] Swithinbank and Newman, Bacteriology of Milk, p. 341.

[118] Schottelius and Ellerhorst. Milch Zeit., 1897, pp. 40 and 73.

[119] Baginsky, Hyg. Rund., 1895, p. 176.

[120] Gaffky, Deutsch. med. Wochen., 18:14.

[121] Flügge. Zeit., f. Hyg., 17:272, 1894.

[122] Duval and Bassett, Studies from the Rockefeller Inst. for Med. Research, 2:7, 1904.