Arnold Arboretum Lectures.

Mr. J. G. Jack, instructor in botany, will conduct a series of lectures and field meetings at the Arnold Arboretum during May and June for the purpose of supplying popular instruction about the trees and shrubs which grow in New England. The lectures will be held on Saturday mornings at ten o'clock and on Wednesday afternoons at three o'clock beginning Saturday, May 5, and closing June 23. The intention is not the give any technical instruction, and no previous knowledge of botany will be required of the students, but the principal object will be the explanation by contrast of the easiest means of distinguishing between the common varieties of plants and shrubs. An hour and a half to two hours will be devoted to each meeting and in addition once or twice a half day will be spent outside of the Arboretum at some favorable spot for the study of trees. The fee for the course, which is open to both men and women, is 86.