To this there are 197 replies, as follows: Eighty-two from rivers. Of these 15 have possible contamina: tion, 13 have possible contamination from surface drainage, 2 have possible contamination from slaughter houses, 1 has possible contamination from hog pens and garbage, 2 have possible contamination from manure piles, 1 has possible contamination from vaults and stock yards, 1 has possible contamination from dead animals, 2 have possible contamination from sewage, 5 have little possibility of contamination, and 16 have no possible contamination. In 73 no changes are considered advisable, and in 5 changes are desired. Eighty-two from lakes. Of these 13 have possible contamination, 5 have probably no contamination, 6 have possible contamination from surface drainage, 1 has possible contamination from sewage, 1 has possible contamination from dead animals, 8 have slight possible contamination, and 21 have no possible contamination. In 71 no changes are considered advisable, and in 10 changes are desired. Four from creeks. Of these 2 have possible contamination, and 1 from surface drainage. No changes desired. Twelve from ponds. Of these 2 have possible contamination, 2 have possible contamination from surface drainage, 1 has possible contamination from dumpings, 3 have slight possibility of contamination, and 3 have no possible contamination. In 11 no changes are considered advisable. Seventeen from rivers and lakes. Of these 5 have possible contamination, 1 has no possible contamination, 1 has sewage contami nation, 11 have contamination from dumped garbage, and 1 has contamination from dead hogs. In 15 no changes are considered advisable, and in 2 changes are desired. NOTE.-The imperfect reporting of all cases of contagious or infectious diseases is emphasized in this table. In many instances there are reports of deaths in a county that has no record of cases. This is explained by the fact that the deaths can be secured from the vital statistics returns, while we are dependent upon the local health officers for the proper reporting of cases.-H. M. B. |