The annual class relay swimming races will be held in the Dunster tank this evening at 8 o'clock. Each team will be composed of four men and every man will swim four lengths of the tank, a distance of about 50 yards. Cups will be awarded to the members of the winning team. There will also be a 50-yard race between the first substitutes of the four class teams for which a cup will be given. In the time-trials the Seniors and Freshmen were very evenly matched.

The order of events will be as follows: relay races--1907 vs. 1908, 1909 vs. 1910; 50-yard race for first substitutes; final relay race for class championship; diving exhibition; water polo game between picked teams.

E. Dana '08 will act as starter; L. W. Pritchett '08, E. Roth '07, and R. W. Fernald '07 as judges; and P. R. Webber '07 as timer. Admission will be 25 cents.

The relay teams as selected in the time trials, held in the tank of the Brookline Swimming Club last night, are as follows:

Seniors--E. Farley, J. V. Quinlan, R. K. Tomlin, G. C. Welch.

Juniors--W. C. Feeley, L. B. Harding, A. B. Kuttner, O. A. Wyman.

Sophomores--F. P. Allen, A. E. Manheimer, F. L. Preston, P. Withington.

Freshmen--T. G. Aspinwall, R. F. Hoyt, T. Lynes, W. R. Morrison.

The entries for the other events are as follows:

50-yard race--E. Becker '08, W. B. Richards '09, L. C. Seaverns '10, G. W. Weller '07.

Diving Exhibition--S. E. Goodwin '07, D. B. Hill '08, B. Moore '08, R. K. Tomlin '07.