I suspended the feet of a duck in an aquarium, where many ova of fresh-water shells were hatching; and I found that numbers of the extremely minute and just-hatched shells crawled on the feet, and clung to them so firmly that when taken out of the water they could not be jarred off, though at a somewhat more advanced age they would voluntarily drop off.
gesaletako moluskuen arrautza asko umatzen ari ziren aquarium batean ahate hanka bat uretan zintzilik eduki nuen, eta konturatu nintzen molusku txiki-txiki eta arrautzatik irtenberri piloa zebilela ahatearen hankan gora herrestan eta hain gogor zetxekiotela hankari, non uretatik kanpora atera eta hanka astindu arren, ez zegoen haiek handik askatzerik, nahiz eta apur bat hazirikoan berez eroriko ziren.