This organization is being extended to villages which have an especially bad sanitary record. For easy reference the Instructions for Repairing, Cleaning and Disinfecting Wells are quoted. [Illustration: MUZAFFARPUR MUNICIPALITY WARD Nº 11 FIG. 3. ] _Repairing._ 1. The ground round a well must first be excavated to a depth of at least 5 feet below surface level, and for a width of 5 feet round the well and sealed with puddled clay, the well lining being first rebuilt from this level where necessary, and continued up for a height of 2 feet 6 inches above ground-level; the top of the well must be sloped off to prevent vessels being placed on it, and consequent splashing getting back into the well. A properly made platform resting on suitable foundations, must be built round the well at 1 foot above at its highest point, and sloping off to ground-level at its lowest, with a ridge round it to prevent spill-water draining away indiscriminately and an opening at its lowest point, leading into a pucca drain, constructed with a suitable fall, and continued until natural drainage is reached, or outside the cone of filtration, so as to prevent any water lodging in the vicinity of the well. 2. A closed-in top prevents dust, which may convey pathogenic germs, gaining access to the water. _Cleaning._ 3. Wells should be dewatered, and cleaned out at least once every year. The sides must be scraped, and all mud, broken earthen vessels, etc., removed; _quicklime_ must then be applied to the sides and bottom of the wells. 4. The only suitable time to clean out wells is during the hot weather as the water in them is then at its lowest level. 5. All wells must be cleaned out down to the well-curb or “Jamot.” _Disinfecting._ 6. Permanganate of potassium is a crystalline salt-like substance of a purple colour, in the preparation of which only mineral substances are employed. [Illustration: FIG. 4. Well Top ] [Illustration: FIG. 5. ] [Illustration: FIG. 6. ] 7. Put one or two ounces of the solid substance into a _dol_, or bucket, which has been filled with water drawn from the well about to be treated. Stir it up, and pour the red solution thus produced into the well, leaving the portion of permanganate that is not yet dissolved at the bottom of the _dol_. Lower the _dol_ into the well, fill it with water, draw it up, pour back the water as before, and repeat the process till all the permanganate has been dissolved. In all cases enough permanganate should be added to produce a faint red colour lasting for 24 hours.