Show floating Flo actIng breakwater costly stonework to make inake a breakwater behind which boats may seek shelter Is obi obviated by the use of a string of metal pontoons pon which have the effect of quieting a boisterous sea no as effectually as a bulkhead of cf stone or piles tho the units consist of et metal structural shapes of un openwork character which are supported by clr filled tanks and are chained together in strings of six or eight each end of the string being secured to a substantial pier the action 0 of tile the waves dashing Is effectually checked by the open character of the metal work ani and their force broken so BO that the water behind the barrier Is 19 quite still for the purpose of a safe harbor |