Peel and pit peaches. Slice and put in prepared lemon water to prevent darkening.
In a small mixing bowl, combine tapioca, 1-1/2 cups sugar, and lemon juice. Reserve.
Drain peaches in a colander, then place in a large stock pot with 4-cups sugar and enough water to prevent scorching.
Heat to just under boiling about 190 degrees. Stir frequently.
Add reserved tapioca mix and reheat while stirring to 190 degrees. Do not boil.
Pour into clean, hot jars leaving 1/2-inch headspace. Seal with lid and ring.
Process in boiling water bath for 15 minutes.