The pretty ladder-like leaf of Jacob's Ladder is most delicate and pleasing in the garden, and its blue bell-flowers are equally refined. This is truly an old-fashioned plant, but well worth universal cultivation. In answer to the question, What is the bluest flower in the garden or field? one answered Fringed Gentian; another the Forget-me-not, which has much pink in its buds and yellow in its blossoms; another Bee Larkspur; and the others _Centaurea cyanus_ or Bachelor's Buttons, a local American name for them, which is not even a standard folk name, since there are twenty-one English plants called Bachelor's Buttons. Ragged Sailor is another American name. Corn-flower, Blue-tops, Blue Bonnets, Bluebottles, Loggerheads are old English names. Queerer still is the title Break-your-spectacles. Hawdods is the oldest name of all. Fitzherbert, in his _Boke of Husbandry_, 1586, thus describes briefly the plant:-- "Hawdod hath a blewe floure, and a few lytle leaves, and hath fyve or syxe branches floured at the top." In varied shades of blue, purple, lilac, pink, and white, Bachelor's Buttons are found in every old garden, growing in a confused tangle of "lytle leaves" and vari-colored flowers, very happily and with very good effect. The illustration on page 258 shows their growth and value in the garden. In _The Promise of May_ Dora's eyes are said to be as blue as the Bluebell, Harebell, Speedwell, Bluebottle, Succory, Forget-me-not, and Violets; so we know what flowers Tennyson deemed blue. Another poet named as the bluest flower, the Monk's-hood, so wonderful of color, one of the very rarest of garden tints; graceful of growth, blooming till frost, and one of the garden's delights. In a list of garden flowers published in Boston, in 1828, it is called Cupid's Car. Southey says in _The Doctor_, of Miss Allison's garden: "The Monk's-hood of stately growth Betsey called 'Dumbledores Delight,' and was not aware that the plant, in whose helmet--rather than cowl-shaped flowers, that busy and best-natured of all insects appears to revel more than any other, is the deadly Aconite of which she read in poetry." The dumbledore was the bumblebee, and this folk name was given, as many others have been, from a close observance of plant habits; for the fertilization of the Monk's-hood is accomplished only by the aid of the bumblebee. [Illustration: Garden at Tudor Place.]