556 
Table III. — Virginia, dairies examined twice — Continued. 
Table III shows the Virginia dairies which were visited twice. 
Of the 31 wells of this series, 17 were rated good on sanitary survey, 
3 were rated as bad, 11 as suspicious. Only 1 of those rated as good 
failed to show either chemical or bacteriological pollution. The 3 
rated as bad all showed both chemical and bacteriological pollution. 
Of the 21 springs visited twice 14 were rated as good from the 
sanitary survey, 5 were rated as bad, 2 as suspicious. One was 
found unpolluted chemically or bacteriologically on both exami- 
nations, and the others were found more or less polluted either 
chemically or bacteriologically on one or the other visit. 
The above analysis of the results seems to show that there are 
comparatively few water supplies on the dairy farms which were 
visited which are free from sanitary objection, but in spite of this 
fact it is nevertheless probable that in many or most cases the faults 
can be rectified. In fact the faults have already been corrected in 
some cases where they were pointed out to the owners of the dairies. 
It would seem advisible in some cases to close up the source of supply, 
but in most cases all that would seem necessary is to point out to the 
dairymen the sources of pollution, and to give them instructions in 
regard to then avoidance. 
