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Not AvailableOn some experiments on the pearl oyster, Pinctada margaritifera (Linnaeus) from Andamans On some experiments on pearl production at Okha and Sikka in the Gulf of Kutch Considerable progress has been made since 1956 in the field of pearl culture by the Gujarat State Fisheries Department at Okha and Sikka in the Gulf of Kutch. Earlier attempts on pearl production did not yield desired result. Refinement in this field was achieved on receiving the technology on pearl culture perfected by the Central Marine Fisheries Research Institute. Of the various materials treated as nuclei. the Japanese nuclei was found to give quality pearls The pearls produced by agate beads, though reflected the colour of beads, experienced problem in uniform drilling while making strings. Analysis of structure of pearl by X-ray method revealed no distinction between the core material and nacre coating. Use of artery forceps and electroacutry in sealing the site of incision was tested. Straining of nucleus and pearls were attempted.Not Availabl