The writer of this was probably among the first to show that the ideas of Humbolt and others, as collected by Mr. Marsh, in his work, that the cutting away of forests, however deplorable from many points of view it might be, had nothing to do with the rise or fall of the water in lakes. In the review of Dr. Hough's American Association paper in the New York Tribune, it was at any rate shown that the rise in the waters of Great Salt Lake was not due to the planting of trees by the Mormons, for that really they had cut away infinitely more than they had planted. Geology now confirms the point. As to tree planting, Mr. King, in the report of the United States Geological Survey, shows this to be a wrong inference, for a similar increase has affected all the lakes of the great basin. He shows partly from observations connected with the growth of trees on the Sierra, that this is due to a climatic oscillation that began about 1860, and which was the first of its kind and extent that has occurred within at least 250 years.

An exchange says that this question of oscillation of climate is full of importance to the populations that are pouring into the regions of the great plains during the present moist extreme.