Show MUSSELS TO BE cultivated adequate supply of raw material for the pearl button industry Is object sought an important step toward insuring nn an adequate supply of raw material for or tile pearl button industry Is being rondo made by the united states bureau of fisheries which for tile first time in history Is cultivating freshwater fresh water mussels during the entire first year ear of their growth the activity of mussel cul jurists turis tin lets ts heretofore has been confined to getting the young oung bivalves well start ed in life during the brief period w when lien they attach themselves I 1 to 0 the gills and ins fins of fish now however as a check upon the effectiveness of their work the elsh will bo be kept in large wooden troughs until the mussels hop drop ot off after which the latter will bo be reth retained Ined in the wooden tanks tor for a year tile tho better to observe and facilitate their growth the mussels will then bo be planted in their natural environment to complete their life cycle popular mechanics magazine |