Abstract: THE third part of Mr. Gamble's handy little flora contains the remainder of the polypetalous dicotyledons. It includes the Cæsalpinia and Mimosa sections of Leguminosæ, containing many forest-trees and shrubs, and, among others, the important families Combretaceæ, Myrtaceae, Melastomaceæ, and Cucurbitaceæ. As in previous parts, descriptions are given of families and genera, but the determination of the species depends on the keys in which the characters of the principal organs are fully contrasted. No typographic distinction is made between native and introduced genera, such as Parkinsonia (tropical American) and Eucalyptus (Australian); E. globulus, the blue gum, is largely grown in forests on the Nilgiris and other hills, and is frequently found self-sown. Another alien genus appears under the name Delonix, an unnecessary revival from Rafinesque; it includes the familiar “flamboyant” generally known as Poinciana regia. As with the previous part, the author has been restricted in the preparation of the work to material available in the great herbaria in this country, but for future parts the Indian collections will again be available.