Among the summer courses held at Harvard, one of which is of much value and likely to gain in importance and numbers as time goes on, is the school of botany. The school has been held every year since 1875 inclusively, with the exception of the years 1882 and 1885. The advantages of such a summer school are great; the fact of its being held in summer is naturally an inducement on account of the superior advantages offered for out-door work, and the greater part of the studies are carried on in the Botanical Garden; as a consequence a student is enabled to examine a variety of plants such as he will be unable to find elsewhere in this part of the country. Prof. G. L. Goodale has usually been at the head of the school and the list of those who have taught in the courses includes such names as Farlow, Penhallow and Trelease. Instruction has been given chiefly in the botany of flowering plants, though Dr. Farlow conducted courses in the flowerless plants in 1875, 1876 and 1877, and last year Mr. F. L. Sargent did the same. This year the course will include lectures and laboratory work in both flowering and flowerless plants. - Cambridge Tribune.