430) MILK AND MILK PRODUCTS 
Taste XLIV 
SHOWING THE THERMAL DEATH POINT OF THE TUBERCLE BACILLUS 
AS FOUND BY VARIOUS INVESTIGATORS 
(After Rosenau) 
— 
Investigator Killed at Not Killed at 
Martin, 1882...... 0... 00) ce cece eee eee eee 80° C. 
May, 1888. ..........-. By cooking.............00.. 
Sormani, 1884.... ...... Boiling, 5 minutes.......... 90° for 10 minutes. 
Schill and Fisher, 1884...) 20... 0.0.0... cc cee ce eee 100°. 
Voelsch, 1887...... 0... c be cc cece rete e eee eenes 100° boiling twice. 
Yersin, 1888............ 60°, 10 minutes, no spores. 
60°, 10 minutes, with spores. 
Bitter, 1890............. 68°, 20 minutes. | 
Bang, 1881............. 70°, 5 minutes (enfeebles). 
60°, 5 minutes (sometimes 
enfeebles). 
80°, sometimes kills. 
85°, alwavs kills. 
Bonhoff, 1892. ......... 60°, 20 minutes. ........... 50°, 60 minutes. 
Gancher and Ledeux- 
Lebard, 1892.......... 60°, 5 minutes (attenuates). 
70°, 1 minute (kills). 55°, 3 hours. 
Forster, 1892 ......... 60°, 6 hours. .............. 60°, 45 minutes. 
95°, momentary............ 80°, momentary. 
DeMan, 1898 .......... ae 4 pours Le tence wees 60°, 1 minute. 
°, 1 hour 
Schroeder, 1894......... 60°, 15 minutes. 
50°, 15 hours. 
60°, 8 hours. 
Woodhead, 1895......... 60 ‘ minutes bent en eee eeee 90" results contradic- 
, 45 minutes. ory. 
70°, 23 minutes. ad 
Marshall, 1899 ......... 68°, 28 minutes............. 60°, 10 minutes. 
Th. Smith, 1899......... 60°, 15 to 20 minutes........ 70°, 10 minutes. 
Morgenroth, 1900....... 55°, 3 hours............000. 100°, momentary 
Kobrak, 1900 ......... 50°, 4 hours. 
Beck, 1900 ............ 100°, 3 hours............... 100°. 
80°, 30 minutes. 
Galtier, 1900. 20.0... ced cece cc cee eee eee eneee 85°, 6 minutes. 
Russell and Hastings, 1900) 60°, 20 minutes. 
Herr, 1901. ............ 65°, 15 minutes............. 80°, 5 seconds. 
Hesse, 1901............. 60°, 20 minutes. 
Levy and Bruns, 1901... .| 65°, 15 minutes. 
Barthel and Stenstrom, 
rn 70°, 15 minutes. 
Bang, 1902 2... cece fe cece cece cee eee eens 60°, 15 minutes. 
Tjden, 1903............. 85°, 1 to 2 minutes. 
Rullmann, 1903 ........ 65°, 30 minutes............. 60°, 30 minutes. 
Barthel and Stenstrom, 
1904...... Lecce cence 80°, 1 minute (uncoagulated) | 80°, 1 minute (coagu- 
; lated). 
Russell and Hastings, 1904) 71°, 1 minute. 
Zelenski, 1906....... 0.0.0)... ccc cece eee cece ee eeeees 76°, 20 minutes. 
Rosenau, 1907.......... 60°, 20 minutes. 
renee ee ET LLC CN LN OTS OTN NT LI TTT GRETA et ait Niners tanaatlaeenitraanniarioniaantbetnt! 
