_herring gull_: _Larus argentatus_, one of the largest and commonest of the harbor birds, and very much like the Western gull of Three-Arch Rocks. It is a pearl-gray and pure white creature with black on the wings. The immature birds are a brownish gray and look like an entirely different species for the first year. PAGE 40 _Boston, Baltimore, etc._: Make a study of your city parks and the spots of green and the open spaces where the wild things may be found. Go to the Public Library and ask for the books that treat of the wild life of your city: “Wild Birds in City Parks,” by Walter, will be such a book for Chicago; “Birds in the Bush,” by Torrey, and “Birds of the Boston Public Garden,” by Wright, for Boston. _Charles River Basin_: the wide fresh-water part of Charles River just above the dam and near Beacon and Charles Streets. _Scup_: another name is porgie, porgy, scuppaug. _Squid_: (_Ommastrephes illecebrosus_), a cephalopod, or cuttlefish, used for bait along the Atlantic coast. The “cuttle-bone” in canaries’ cages is taken from the genus _Sepia_. _Squeteague_: pronounced skwe-tēg´; also called weakfish and sea-trout. _Scallops_: are shellfish the large muscle of which is much prized for food. These are only a few of the fish kinds brought in at T Wharf. PAGE 41 _Grand Banks_: a submarine plateau in the Atlantic, eastward from Newfoundland; noted as a fishing-ground. Its depth is thirty to sixty fathoms. _the Georges_: a smaller bank lying off Cape Cod. “_We’re Here_”: the name of the schooner in Kipling’s “Captains Courageous.” _Quincy Market_: an old well-known market in Boston. _King’s Chapel_: on Tremont Street. It was begun in 1749 and is still used for worship. See “Roof and Meadow” for a fuller account of the sparrows. PAGE 42 _rim rock_: the edging of rock around the flats and plains of the sage deserts of Oregon. _Boston Common_: known to every child who has read the history of our country. The “Garden” is across Charles Street from the Common. PAGE 43 _Agassiz Museum_: the Museum of Comparative Zoölogy at Harvard University. It is popularly called the Agassiz Museum in honor of the great naturalist Louis Agassiz, who founded it. See Sarah K. Bolton’s “Famous Men of Science.” _Arnold Arboretum_: is near the western edge of Boston; one of the most celebrated gardens of trees in the world. _Through the heaven’s wide pathless way_: from “Il Penseroso,” by Milton. PAGE 44 _Swales_: wet, grassy, or even bushy, meadows. CHAPTER VI FOR THE PUPIL PAGE 46 _The tree-toad_: (_Hyla versicolor_); he is said by country people to prophesy rain. _pennyroyal_: is one of the small aromatic mints.