WORLEY : A SEPTIC TANK. 



127 



the ammonia, these determinations being reduced to nitrogen 

 by multiplying by 0.82. 



The sewage was turned into the plant on March 5, and 

 analyses started April 18, extending to May 23. The following 

 table shows the results of the analyses, and plates XXXII to XL 

 show a comparison of the various results at the three points of 

 collection : 



