The excursions given to the members were all of them scientific; they were not merely pleasure trips. This point was a marked feature of the Columbus meeting, and one well worthy of future imitation as far as may be. Not every place, however, has such marked facilities in this respect. On Saturday, August 26th, three free excursions were provided to points of geological or archæological interest. They were about equally shared by the members, together with representatives of the local committee. One party left on Friday evening, passing the night at Sandusky, and going by boat thence to the celebrated islands of Lake Erie, there to see the wonderful glacial furrows in the corniferous limestone on Kelley's Island and the recently opened strontia cave on Put-in-Bay Island. These islands are also favorite pleasure resorts for the whole neighborhood, and the trip was one of great interest and enjoyment. Another party, on Saturday morning, went to points of special importance in the coal region of the Hocking Valley, under the direction of Mr. R. M. Haseltine, chief mine inspector of Ohio. At Corning the party went down into Mine No. 8, owned by the Sunday Creek Coal Company, which has recently been equipped with electric power generated by utilizing the waste gas from neighboring gas-wells. This is said to be the first mine in Ohio to improve this natural source of power. At a depth of sixty-five feet the visiting party were taken by mine cars to a point where a remarkably fine exposure has been made of a carboniferous "forest," with upright trunks of _Sigillaria_ and associated forms of coal vegetation finely displayed. At a point somewhat nearer the entrance, but at a lower level, lunch was served by the company, in a chamber lighted by electricity, two hundred feet underground and a mile from daylight! Another mine was visited later, and the machinery and appliances examined; this was No. 16, at Hollister, owned by the Courtright Coal Company.