WATER SUPPLY, PLTTMBIXG, ETC., EOB COUNTRY HOMES. 37 
Figure 28 shows a type of double chamber septic tank for a family 
of six people, designed by TT. C. Davidson. 1 Figure 29 is another 
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Pig. 28— Double chamber septic taut for six people, suited to conditions "u-here plenty of outlet fall is 
available. 
type of septic tank for a family of eight people. These tanks are 
suited to conditions where plenty of outlet fall is available. Figure 
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Fig. 29.— Double chamber septic tank for eight people. 
30 is a double-chamber tank for a family of six persons, designed by 
C. A. Ocock of the Wisconsin Agricultural Experiment Station. 2 ' 
1 Univ. Mo. Engin. Expt. Sta. Bui. 3. 
2 Wisconsin Sta. Circ. Inform. 34. 
