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1 From the Zoölogical Laboratory of Rutgers College and the Department of Biology, New Jersey Agricultural Experiment Station
Full-grown larvæ of the oyster shortly before attachment move over an appreciable area of solid surface testing it out with the foot.
Actual attachment is preceded by circling movements, the larva finally coming to rest with the left valve held in contact with the substratum by the foot.
The suggestion of Stafford, 13, that the foot is the organ of attachment has been confirmed by direct observation. The use of the foot and of the mantle during fixation is here described.
The circling movements of the larva while crawling over a substratum not only aid it in obtaining a favorable foothold, but probably are also instrumental in producing a fairly even distribution of the spat.
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