ABSTRACT

[5°"1 the Newhaven fishermen, andsomelimes accompanied them when they trawled for oysters, and thus got many spei:imens. But from not having had any regu lar practice in dissection, and from possessing only a wretched microscope my attempts were very poor. Nevertheless I made on interesting little discovery, and read aboulthe beginning of the year 1826, a short paper on the subject before the Plinian Socy. This was that the so-called ova ofFlustra had the power of independent movement by means of cilia, and were in fact larvae. In another short paper I showed that littJe globular bodies which had been supposed to be the young state of FUCtlS iOTeus were the egg-cases of the worm-like Pontobthlla muncala.