Show oyster oysters and disease Ol teace in a recent work by prote Il herdman erdman and boyce entitled oysters and disease they report the result of ot their investigations on the cause which bich produce produces green oysters oy stera many epicures prefer their oyster oysters to have the emerald erac huo hue though there Is a widespread opinion that green oysters are not mot edible the investigators in beati gator arrive at the con causion that there kie ate several forma forms of greenness copper Is said to bei present in minute quantity in all oysters it WAS found that tho greenest american oysters contained about four times the amount of copper which is present in tho whitest american oysters careful chemical examination demonstrated id that there Is proportionately more copper in the greener parts of the oysters than in those parts which are less green the green color of the highly prized vu yar ennes oysters was found to be pro ducody by the presence of a certain pigment end and did not depend upon the tho amount of ot the contained copper |