_marsh-marigolds_: The more common but _incorrect_ name is “cowslip.” The marsh-marigold is _Caltha palustris_ and belongs with the buttercup and wind-flower to the Crowfoot Family. The cowslip, a species of primrose, is a European plant and belongs to the Primrose Family. PAGE 5 _woolly-bear_: caterpillar of the isabella tiger moth, the common caterpillar, brown in the middle with black ends, whose hairs look as if they had been clipped, so even are they. _mourning-cloak_: See picture, page 77 of “Winter,” the second book of this series. The antiopa butterfly. _juncos_: the common slate-colored “snowbirds.” _witch-hazel_: See picture, page 28 of “The Fall of the Year”; read description of it on pages 31-33 of the same volume. _bluets_: or “innocence” (_Houstonia cœrulea_). PAGE 6 _the Delaware_: the Delaware River, up which they come in order to lay their eggs. As they come up they are caught in nets and their eggs or “roe” salted and made into caviar. _Cohansey Creek_: a small river in New Jersey. _Lupton’s Meadows_: local name of meadows along Cohansey Creek. CHAPTER II TO THE TEACHER Read Kipling’s story in “The Second Jungle Book” called “The Spring Running.” Both Jungle Books ought to be in your school library. Spring is felt on the ocean as well as over the land; life is all of one piece; the thrill we feel at the touch of spring is felt after his manner and degree by bird and beast and by the fish of the sea. Go back to the last paragraph of chapter I for the _thought_. Here I have expanded that thought of the tides of life rising. See the picture of the herring on their deep sea run on page 345 of the author’s “Wild Life Near Home.” Let the chapter suggest to the pupils the mysterious powers of the minds of the lower animals. FOR THE PUPIL PAGE 7 _Mowgli_: Do you know Mowgli of “The Jungle Book”? _Chaucer_: the “Father of English Poetry.” This is one of the opening lines of the Prologue to the Canterbury Tales. PAGE 8 _migrating birds_: See “The Great Tidal Waves of Bird Life” by D. Lange, in the “Atlantic Monthly” for August, 1909. PAGE 9 _The cold-blooded_: said of those animals lower than the mammals and birds, that have not four-chambered hearts and the complete double blood-circulation. _Weymouth Back River_: of Weymouth, Massachusetts. PAGE 10 _catfish_: or horn-pout or bull-pout, see picture, page 12. PAGE 11 _stickleback_: The little male stickleback builds a nest, drives the female into it to lay her eggs, then takes charge of the eggs until the fry hatch out and go off for themselves. CHAPTER III TO THE TEACHER