{HEAD ~ Methods} for introducing {TAIL ~ a substantially uniform concentration} of a functional agent into a flowing stream of water using a shaped composition 
{ HEAD ~ Methods } for introducing { TAIL ~ a substantially uniform concentration } of a functional agent into a flowing stream of water using a shaped composition
HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH