Show MUSSELS TO BE cultivated adequate supply of raw material for the tha Pearl Button industry Is object sought an important step toward insuring in adequate supply of 0 raw material for the pearl button industry Is being made by the united states bureau of fisheries which for the first firs t time in history Is cultivating freshwater fresh water mussels during the entire first year of their growth the activity of in mussel ussel cul jurists heretofore has been confined to getting the young bivalves well started in life during the brief period when they attach themselves to the gills and fins of fish now however as a check upon the effectiveness of their work the fish will be kept in large wooden troughs until the mussels drop oft off after which the latter will be retained in the wooden tanks for a year the better to observe and facilitate their growth the mussels will then be planted in their natural environment to complete their life cycle popular Alec mechanics hanics magazine |