PRODUCTION OF HYDROGEN SULPHIDE 



237 



There is no constant relationship between the number of colon 

 bacilli from different animals and the amount or rate of hydrogen 

 sulphide production; and there is also no definite relationship 

 between the numbers of other organisms and hydrogen sulphide 



TABLE 1 

 Summary of examination of feces from different animals 



Human . 



Bovine. 



Horse. 



Sheep. 



Pig. 



Chicken. 



Rabbit 



Dog. 



a i 



« h) 



z z a 



m n a 



.§8* 



' K m 



39.8 

 27.5 



1.74 

 2.5 



0.31 

 55.0 



90.0 

 224.0 



288.0 

 90.0 



126.0 

 28.0 



3.2 

 17.0 



53.0 

 35.0 



t s 

 ^2a 



r+ Z O 

 K p W 



E> o « 

 O o H 

 H S, 



.-Ss 



O h3 

 C4 



20.9 

 6.1 



1.25 

 1.8 



0.25 

 1.0 



11.0 

 215.0 



281.0 

 50.0 



26,000.0 

 32.0 



2.23 

 20.9 



48.0 

 34.0 



d ^ « 



a 

 a 



55 fc 



33.0 

 8.0 



0.01 



7.5 



0.07 

 0.06 



10.0 

 210.0 



233.0 

 10.0 



20.0 



2.9 



0.01 

 0.04 



47.0 

 11.0 



APPROXIMATE NUMBER OF MILLIMETERS OP 

 LEAD ACETATE PAPER BLACKENED 



Dilution = 

 1:100000 



30.0 

 11.0 



0.1 

 5.0 



0.1 

 0.08 



5.0 



90.0 



90.0 

 61.0 



10.0 

 4.0 



0.003 

 0.01 



50.0 

 6.0 



2 

 0.5 



1 



4 



7 

 1 



10 

 3 



30 



Dilution = 

 1:1000000 



30 1 



30 



30 



Dilu- 

 = tion 



1:10000000 



Diluticn = 

 1:100000000 



0.5 



1 



3 

 



2 

 1 



10 



1 



10 

 3 



1 

 



10 

 5 



20 410 

 30 9 2 



30 0.5 

 20 



20 30 

 20 30 





 10 30 



* The dilution is one-tenth lower than that given in the column heading. 



formation. Certain types of animal feces seem to produce 

 hydrogen sulphide in even higher dilutions than human feces. 

 Therefore this test applied to the direct examination of water 

 would have no value since it is too delicate. It is to be expected 



