Mr. A. B. Seymour, of the Cryptogamic Herbarium, will lead a natural history walk today from the Cherry Hill station through the woods to study lichens, mosses, ferns and other cryptogams, especially tree-attacking fungi. The walk will be open to all members of the University. Men may go either by bicycle (distance about 11 miles), meeting in the Square at 9 A. M., or by train leaving North Cambridge Junction at 10.22 A. M. Returning trains arrive at North Cambridge Junction at 3.31, 4.44 and 6.58 P. M.

Professor Davis, or some other member of the geological department, will lead a walk to see a winter storm on Nantasket Beach on the first Saturday when the conditions are favorable.

A winter storm on the sea shore is a very impressive demonstration of the force exerted by the wind and waves in geological processes. The abrasion and transportation of materials as well as the battering and undermining of cliffs may best be studied at such a time.

Aside from the interest of the storm itself Nantasket Beach is instructive from the physiographic point of view as it shows the trying together of islands and the protection of old cliffs by the formation of beaches.

If it seems likely that there will be a storm on an appropriate date provisional notice will be given in Friday's CRIMSON that the party will go Saturday, and a final notice will be put in Saturday's CRIMSON. Men who are interested will be notified by postal or telephone if they make arrangements in advance with E. S. Bryant, 56 Plymptom street.