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foot. The management of the details of transportation of these excursions will be entrusted to the agency of Messrs. Ruffieux and Ruchonnet at Lausanne; their scientific direction will be undertaken by Professor Renevier and Professor Golliez, of the University of Lausanne, The first excursion of this sort will start from Geneva, where those participating in it will assemble on the 15th of August, and will spend thirteen days visiting localities in or near the Jura, including the environs of Geneva, Lausanne, Neuchâtel, Bâle, and the Falls of the Rhine. The second of these "voyages en zig-zag" will start from Zurich on September 3d, and will spend thirteen days in the most delightful parts of the Alps, visiting, among other points, the Rigi, St. Gothard, the Lake of the Four Cantons, the Jungfrau, the Matterhorn, and the Italian lakes. The cost of the first excursion is to be $60, and of the second $80.
Of the pedestrian tours, five are to take place before the meeting at Zurich. One, under the direction of Professor Schardt, of Montreux, will devote six days to the French Jura in the neighborhood of Geneva, the rendezvous being at Geneva, August 21st. The second, conducted by Professor Jaccard, of Neuchâtel, will spend five days in the Jura of Vaudois and in the neighborhood of Neuchâtel. The rendezvous is to be at Pontarlier, August 22d. The third excursion, in charge of M. Rollier, of Bienne, will spend six days in the Bernese Jura, the rendezvous at Delémont, August 21st. The fourth, under the direction of Professor C. Schmidt, of Bâle, will devote five days to the vicinity of Bâle and the country east of the Argovian Jura; the rendezvous at Bâle, August 21st. The fifth excursion, under Professor Mühlberg, of Aarau, will spend five days in the Argovian Jura and in the neighborhood of Soleure. The rendezvous will be at Aarau, August 23d.
There will be four pedestrian tours after the meeting of the Congress, one under the leadership of Professor Heim, of Zurich, who will conduct a party over the eastern Alps of Switzerland from St. Gallen to Tessin, studying the compressed folds in the Säntis, and crossing the great Glärner double fold. Professor C.