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EXPERIMENTS IN THE ARTIFICIAL PROPAGATION
Factors of environment
Collection and transplanting
adult oysters apparatus aquaria artificial oyster culture artificial propagation oysters attached attained an average batch of spawn bolting silk BUREAU OF FISHERIES clean COLLECTION AND TRANSPLANTING collectors consists in placing day-old spat days old density developed shells eggs and larvae embryo oysters EMBRYONIC DEVELOPMENT experiments female oyster fertilized eggs filters filtros blocks flood tide flow of water growers and biologists GROWTH OF SPAT HATCHING AND REARING heavy sets inches infusoria inshore beds large numbers larvse mature spawn method of artificial Milford Harbor monel metal screen oyster eggs oyster embryos oyster growers oyster larvae paraffin and sand practical oyster propagated oyster spat PROPAGATION OF OYSTERS proved successful reared to setting rearing tanks retaining the larva running water salt water sea-scallop shells shell stage single full-grown single oysters South Bay spawn consisted spawning tank spermatazoa straight hinge sunlight surface temperature trays U. S. BUREAU vigorous water supply year-old oysters young oysters