This excellent report is beautifully illustrated with plates of various Pennsylvania fruits, and has numerous essays, and reports from many of the leading horticulturists of the State, besides brief notes of the discussions. It is given free to all members of the Society, which we are pleased to see by the list printed herewith is quite a full one in comparison with that of some other States, though not as full as a great State like Pennsylvania ought to have. Mr. W. P. Brinton, Christiana, Pa., is corresponding secretary; and Mr. E. B. Engle, of Marietta, the recording secretary.

Sixth Bienntal Report of the Board of Trustees of the Iowa State Agricultural College. 1874 - 1875. - This institution seems to be very successful, nearly three hundred students annually availing themselves of its advantages) a large number being young women. Among the reports of departments, that of horticulture and forestry is full of interesting matter. A large number of experiments have been tried on various subjects, - and although many of the matters sought to be proved have long since been decided, it does not detract from the value of the observations. Indeed, it is one of the weaknesses of our profession, that too much is taken on trust. We can only wish that more would follow the example of Prof. McAfee and go over things as he has done. Some of the expressions seem strange to " old stagers." In an account of preserving tree seeds, for instance, we are told that white oak, red oak, burr oak and others, kept better in layers piled on the surface all winter, than in the less economical rot heap. A nurseryman who would put such seeds as these in a " rot heap " would be thought crazy. A "rot heap," in nursery phrase, is a spot where hard bony seeds lie for a year before sowing.

We opine further that some of the failures or successes in some of the experiments are due to deeper causes than those supposed, - and we think that repeated experiments, to prove some of the points, would not always end the same way. Prof. Bessey has an interesting chapter on smut in Indian corn, and some other plants.