The Department of Geology has arranged for two excursions during the April recess, as before announced. Professor Davis will conduct one party to the middle Susquehanna district with the object of studying the deflected tributaries of the Susquehanna River. The reading reference is "The Rivers and Valleys of Pennsylvania," by W. M. Davis in the Nat. Geographic Mag., Vol. I, 1889: pages 241-243. The party leaves New York (via ferry) from the station of the Deleware, Lackawanna and Western R. R. on Saturday, April 18, at 9 a. m. There will probably be reduced travelling rates. Professor Davis, who has charge of the tickets, should be consulted by those intending to go.

The other excursion is in charge of Mr. J. B. Woodworth; the objective point is Gay, Head, Martha's Vineyard. The reading will be found in the special pamphlet, Geology S. 2, Summer School of 1896, which has recently been issued. The party leaves the Providence Station, Boston, on Monday, April 20, at 12 m. The expense will be about $15. Any one who wishes to join the excursion should communicate with Mr. Woodworth immediately, as the accommodations are limited.

In the summer vacation there are two series of excursions, one to be conducted by Dr. G. E. Ladd '87, now of the Geological Survey of Georgia, the other to be taken charge of by Mr. J. B. Wood-worth. The course Geology S. 1, under the direction of Dr. Ladd, will make excursions during July which will be a rereception of those now being conducted during the spring months.

The excursion of Geology S. 2, conducted by Mr. Woodworth, will be changed from those of previous years, in that the field to be visited this year lies wholly within the New England States. The class will assemble in Cambridge on July 3, and after ten days spent in preparation for studies in the field, will proceed to Attleboro, situated in the northern part of the Narragansett coal basin. Two weeks will be spent in the examination of the country between Attleboro and Newport. From Newport the party will go to the island of Martha's Vineyard, and take up its headquarters with the Gay Head Indians. At this point the attention of the class will be devoted to the intricate structure of the famous Gay Head cliffs, also to the great terminal moraine and to the encroachment of the sea upon the island. After leaving Martha's Vineyard the party will go to the last section of its work in the district of old lava beds and triassic sandstones about Meriden in the central part of Connecticutt. The party will break up on August 13. Professor Shaler will take a limited share in the work in Rhode Island and Martha's Vineyard.