i 5 8 
THOMPSON YATES LABORATORIES REPORT 
Conclusions 
Above it has been stated that, considering the origin of the organisms that 
gave this reaction, it was justifiable to conclude that when reaction was obtained, 
faecal contamination was almost certainly present. The results obtained with waters 
and milk tend to confirm this conclusion. 
We think, therefore, we are warranted in putting forward this test as a rapid 
means of detecting faecal contamination. 
