In Massachusetts pearls have been collected from many of the ponds and brooks. In Nonesuch Pond in Weston, the _Unio complanata_ has yielded many small ones of attractive appearance, but not of sufficient size or luster to sell for more than $10 each. Ponds in the town of Greenwich and also in Pelham in Hampshire County are among the best in Massachusetts for pearls. The Sudbury River above Concord also yields many. Relatively few of the Unios contain pearls, and the gem-bearing individuals seem to be grouped in special localities. Outside of these places, thousands of mussels may be opened without revealing a single gem. A collection of small Massachusetts pearls was brought together a few years ago by Mr. Sherman F. Denton of Wellesley Farms, who has devoted much time to exploring the inland waters of Massachusetts. Connecticut also has had a slight touch of the pearl fever. In 1897, Mr. C. S. Carwell of Ledyard, explored the headwaters of Mystic River, and in a few weeks collected a number of pearls, one of which he is reported as having sold for $500, and two others were estimated at $400 each. And from the other end of the State, along the Shepaug River, is reported a similar account of the success of Mr. Arlo Kinney of Steep Rock. Attracted by these reports, crowds of seekers have proceeded in the usual reckless manner to make wholesale destruction of the mollusks. The finds have been especially large and valuable in the lakes and streams of Litchfield County, particularly in Bantam Lake. In New York State, pearls have been found in the swift shallow streams in the Adirondack region, and in several of those entering the St. Lawrence, particularly the Grass River in St. Lawrence County. Pearls were first reported from this region in 1894. In 1896 the Grass yielded one pearl weighing fifty-eight grains, worth $600 locally; and in 1897 one weighing sixty-eight grains was found, the fisherman selling it for $800. A resident of Russell township devoted most of his time to pearling in Grass River during 1896 and 1897, from which he is said to have realized $2000. In this region the mussels are found by wading in the shallow water and scanning the bottom through a water-telescope. Most of the pearls are of slight value, but many individuals are reported as worth from $30 to $60 each. Pearl River in Rockland County, New York, has furnished a number of brown pearls. These are commonly small, weighing from one eighth to one half grain each, although some weigh seven or eight grains each. Most of these are not lustrous, but occasionally a bright brown or a bright copper-brown specimen of from one to four grains is met with. At the Paris Exposition, in 1900, were exhibited one hundred of these pearls, with an aggregate weight of 281 grains; these now form part of the Morgan-Tiffany Collection, in the American Museum of Natural History.