As they are not seen on their way down the streams, it is thought by fishermen that they never return, but waste away and die, clinging to rocks and stumps of trees for an indefinite period; a tragic feature in the scenery of the river bottoms worthy to be remembered with Shakespeare's description of the sea-floor. They are rarely seen in our waters at present, on account of the dams, though they are taken in great quantities at the mouth of the river in Lowell. Their nests, which are very conspicuous, look more like art than anything in the river.

If we had leisure this afternoon, we might turn our prow up the brooks in quest of the classical trout and the minnows. Of the last alone, according to M. Agassiz, several of the species found in this town are yet undescribed. These would, perhaps, complete the list of our finny contemporaries in the Concord waters.

Salmon, Shad, and Alewives were formerly abundant here, and taken in weirs by the Indians, who taught this method to the whites, by whom they were used as food and as manure, until the dam, and afterward the canal at Billerica, and the factories at Lowell, put an end to their migrations hitherward; though it is thought that a few more enterprising shad may still occasionally be seen in this part of the river. It is said, to account for the destruction of the fishery, that those who at that time represented the interests of the fishermen and the fishes, remembering between what dates they were accustomed to take the grown shad, stipulated, that the dams should be left open for that season only, and the fry, which go down a month later, were consequently stopped and destroyed by myriads. Others say that the fish-ways were not properly constructed. Perchance, after a few thousands of years, if the fishes will be patient, and pass their summers elsewhere, meanwhile, nature will have levelled the Billerica dam, and the Lowell factories, and the Grass-ground River run clear again, to be explored by new migratory shoals, even as far as the Hopkinton pond and Westborough swamp.

One would like to know more of that race, now extinct, whose seines lie rotting in the garrets of their children, who openly professed the trade of fishermen, and even fed their townsmen creditably, not skulking through the meadows to a rainy afternoon sport. Dim visions we still get of miraculous draughts of fishes, and heaps uncountable by the river-side, from the tales of our seniors sent on horseback in their childhood from the neighboring towns, perched on saddle-bags, with instructions to get the one bag filled with shad, the other with alewives. At least one memento of those days may still exist in the memory of this generation, in the familiar appellation of a celebrated train-band of this town, whose untrained ancestors stood creditably at Concord North Bridge. Their captain, a man of piscatory tastes, having duly warned his company to turn out on a certain day, they, like obedient soldiers, appeared promptly on parade at the appointed time, but, unfortunately, they went undrilled, except in the manuoevres of a soldier's wit and unlicensed jesting, that May day; for their captain, forgetting his own appointment, and warned only by the favorable aspect of the heavens, as he had often done before, went a-fishing that afternoon, and his company thenceforth was known to old and young, grave and gay, as "The Shad," and by the youths of this vicinity this was long regarded as the proper name of all the irregular militia in Christendom. But, alas! no record of these fishers' lives remains that we know, unless it be one brief page of hard but unquestionable history, which occurs in Day Book No.