The preliminary announcement of the decennial celebration of the class of 1898, to occur during Commencement week, has been sent out to members of the class. Committees have been appointed of men living in Boston and the vicinity to arrange details. On Saturday evening, June 20, an informal class entertainment is being planned; Monday, June 22, will be Shore and Water Day, and will be followed by the Class Dinner in the evening; Tuesday, June 23, will be Field and Country Day at the Brookline Country Club, where numerous sports and an evening entertainment will take place.