Note 2470 — BOOK IX. THE NATURAL HISTORY OF FISHES.
John Bostock translation
Spallanzani informs us that the fishermen of the Lagunes of Comacchio form with reeds small chambers, by means of which they take the eels when endeavouring to re-enter the river Po; in these such vast multitudes are collected, that they are absolutely to be seen above the surface of the water.