xiii, b, 3 Boynton: Virulence of Body Organs in Rinderpest 149 



evident that a 0.5 per cent phenol extract of liver, spleen, and 

 lymph glands, 5 days old, is highly infectious to susceptible 

 animals. 



3. From the result obtained in experiment 5, it is evident 

 that a 0.5 per cent phenol extract of heart muscle, 5 days old, is 

 highly infectious to susceptible animals. 



4. From the result obtained in experiment 6, it appears that 

 the skeletal muscle is not a suitable tissue for making extracts 

 in the case of rinderpest. 



5. From the results obtained in experiments 7, 10, 11, 12, 

 13, 14, 15, and 17, it is proved that a 0.5 per cent phenol extract 

 of liver, spleen, and lymph glands can hold the virus of rinder- 

 pest in a virulent form for periods of time varying from eight 

 to fifty-five days. 



6. From the result obtained in experiment 8, it is evident that 

 a 0.5 per cent phenol extract of caecum and of colon, 5 days 

 old, is highly infectious to susceptible animals. 



7. From the result obtained in experiment 9, it is apparent 

 that the larynx, pharynx, and base of tongue are not suitable 

 tissues for making extracts in the case of rinderpest. 



8. From the result obtained in experiment 16, it is apparent 

 that the pancreas is not a suitable tissue for making extracts 

 in the case of rinderpest. 



9. From the results obtained in experiments 18, 20, and 23, 

 it is evident that a 1 per cent phenol extract of lymph glands, 

 6, 20, and 17 days old, respectively, is highly infectious to 

 susceptible animals. 



10. From the result obtained in experiment 19, it is evident 

 that a 1 per cent phenol extract of liver, spleen, caecum, and 

 lymph glands, 17 days old, is highly infectious to susceptible 

 animals. 



11. From the result obtained in experiment 21, it is evident 

 that a 1 per cent phenol extract of liver, 21 days old, is virulent 

 to susceptible animals. 



12. From the result obtained in experiment 22, it is evident 

 that a 1 per cent phenol extract of spleen, 21 days old, is virulent 

 to susceptible animals. 



13. From the result obtained in experiment 24, it is evident 

 that a 2 per cent phenol extract of spleen, 5 days old, is infectious 

 to susceptible animals. 



14. From the result obtained in experiment 25, it appears 

 that when glycerin is added to a 2 per cent phenol extract that 

 has been agitated for forty-eight hours the virus of rinderpest 

 is readily destroyed. 



