This important order yields us our most beautiful flower, the Rose, of which there are a great many varieties, among which the Dog-rose--that beautiful ornament to our hedges--deserves to hold a conspicuous place, also the Sweetbriar or Eglantine. The rose is used in Turkey and Persia for obtaining that most valuable and delicious perfume, "Otto of Roses." It is made by distilling a portion of water from several quantities of fresh roses, until it becomes saturated with the volatile oil. This water is then exposed to the open air, and, in the cool night time, drops of the otto collect on the top, from which it is carefully gathered, and the same water again distilled from a fresh quantity of roses. Besides the Rose tribe, this order contains some of our most valued fruits. The Apple, Pear, and Strawberry belong to it, also the Almond. [Illustration: Pear Tree.] [Illustration: Rose.] [Illustration: Strawberry.] 5. LYTHRACEÆ (Lythrum salicaria) Purple Loose-strife. [Illustration: Loose-Strife.] The Purple Loose-strife is indigenous to England, bearing a purple flower, and is also found in Australia. There are several varieties of this plant; an Indian species, Lythrum Hunteri, bearing a red flower, has been used by the natives as a red dye. 6. ONAGRACEÆ (Epilobium angustifolium) French Willow. [Illustration: French Willow.] This order contains some very beautiful flowering plants, as the Evening-primrose (Enothera biennis), Fuchsia, &c. of which there are a great many varieties; they abound plentifully in America, of which country the Evening-primrose is said to be a native. 7. MYRTACEÆ (Myrtus communis) Myrtle. [Illustration: Myrtle.] The Myrtles are, for the most part, inhabitants of the warmer climates. They are shrubs or trees, and sometimes of great size and beauty; the flowers and leaves of many species are odorous. There are upwards of fifty species of Myrtle, and they are found in most of the warmer parts of the Old and New Worlds. 8. CRASSULACEÆ (Sempervivum tectarum) House-leek. (Sedum Acre) Stone-crop. [Illustration: House-leek.] The species of this order have, most of them, thick succulent leaves. The Sedums, Stone-crop, and House-leek, are among the most common, growing in dry, earthy matter, on walls or housetops; they, nevertheless, are full of a milky juice. The juice of Houseleek mixed with cream has been a long time a popular remedy for various external complaints, but, like most popular remedies, does neither good nor harm. 9. GRASSULARIACEÆ (Ribes rubrum) Red Currant. (Ribes grassularia) Gooseberry. [Illustration: Gooseberry.] The Gooseberry and Currant are members of this order. They are useful plants for the kitchen-garden, and afford a grateful and wholesome fruit, although unripe gooseberries (eaten raw) are extremely unwholesome, as the acid they contain is the "oxalic."