The third annual Intercollegiate Geological Excursion will be held at Meriden, Conn, to visit the Hanging Hills--broken, tilted and eroded lava sheets--under the guidance of Professor H. E. Gregory of Yale University on Saturday, October 17. Teachers and students in all the colleges of central and southern New England, and teachers from a number of secondary schools are invited to take part in the excursion. The Harvard party will take the express train. B. & A. R. R. at Trinity Place Station (Back Bay), at 4.04 p. m., Friday, October 16; returning Saturday evening about 10 o'clock. The headquarters of the expedition will be in Meriden at Hotel Winthrop. Men who intend to make the excursion are requested to send their names to Professor W. M. Davis, Cambridge. The total expense will be from $8 to $10. A small saving may be made by those who will join in using mileage tickets.