﻿KESISTANCE OF ANIMALS TO MICRO- OKGANISMS. 



Table I. 



Date, 1896. 



May 19. .. 

 " 22... 



" 23. 



" 26. 



Fune 1 . 



" 4 . 



" 8 . 



" 13. 



" 16. 



" 23. 



24. 



29. 

 29. 



Hour. 



No. 1, 

 3200 g. 



No. 3, 

 3085 g. 



No. 3, 

 1890 g. 



No. 4, 

 1350 g. 



No. 5. 

 1830 g. 



No. 6, 

 3010 g. 



C.ft. 



air 



perh. 



^of 

 CO,. 



10.00 a. m. 

 4.45 p. m. 









+ 

 1805 g. 



+ 



+ 



5.0 





5.00 " 

 4.00 " 

 8.30 a. m. 

 2. 30 p. m. 

 9.15 a. m. 

 2.00 p. m. 

 3.00 p. m. 

 10.45 a. m. 















5.25 



3.78 



9.5 



9.7 



9.7 



9.36 



9.83 



3.65 

 3.75 

 3.55 

 2.60 

 3.-33 

 2.42 



8.45 a. m. 

 11.30 " 

 5.15 p. m. 



1850 g. 



1802 g. 



+ 



1410 g. 







9.41 



2.16 



Remarks. 



No. 1 is nearest the 

 pump. 



No. 4, 5 and 6 

 smothered. Con- 

 tinued with four 

 animals. 



New pump. 



Animals inoculat- 

 ed with staphy. 

 pyog. aur. 



No. 3 is dead. 



Experiment stop- 

 ped. Nos. 1, 2, 

 and 4 living. 



Present weight. 



The staphylococcus pyogenes aureus was recovered from the site of 

 inociilation, peritoneal fluid, pleural cavity, and spleen of No. 3. 



Experiments with Carbonic Acid Gas. 



The CO2 experiments were conducted in the following manner: The 

 animals were all placed under a bell-jar of 37 litres capacity, through 

 which a current of air was maintained by means of a blower operated 

 by the force of the laboratory water supply. The pure carbonic acid 

 gas was derived from a large cylinder of compressed gas, and entered 

 the air supply of the bell-jar through a Y-tube connection. The rate 

 of flow of the carbonic acid gas was regulated by means of the stop- 

 cock on the supply tank. By this means a fairly constant supply could 

 be obtained if carefully watched and regulated. 



Experiment II. 



Carbonic acid gas. — Four guinea-pigs were placed under a 37 litre 

 bell-jar. The experiment was commenced May 19, 1896, and terminated 

 June 29, 1896. The details of the experiment are shown in Table II. 



