The third annual vaudeville performance for the benefit of the Cambridge Social Union will be given at 8 o'clock this evening in Brattle Hall. Tomorrow night the entertainment will be repeated, followed by dancing.

The program is as follows:

PART I.

Quartet--W. W. Manton '05, C. J. Webber '05, G. H. Cox '06, S. F. Strother '06.

Musical Comedians--L. B. Hall '05, R. Nichols '05.

Troupe of trained animals--F. B. Sears '05, A. M. Scully '05, L. A. Pettebone '05, A. E. Chase '05, H. Nash, Jr., '05, L. T. Swaim '05.

Impersonations--S. Baird '03; accompanist, H. Allen '03.

The intermission will be in the nature of a pop-concert.

PART II.

Comic opera burlesque entitled "Conglomeranda."

The cast: Leander, a soldier hero,  S. Baird '03 Bruno, the village innkeeper,  P. D. Lamson '05 Galump, the gizzard of Goz,  W. S. Parker '06 Flossie, a poor flower-girl,  A. M. Scully '05 Duchess Tryphosa Monstressa, the King's ward,  L. Harrison '07 Stellarina, queen of the fairies,  R. N. Baldwin '05

Fairy assistants--A. E. Chase '05, L. A. Pettebone '05.

Village maids of Goz--H. M. Turner '06, E. J. Fraser-Campbell, Jr., '06, J. A. Remick, Jr., '06, W. T. Glidden '07, W. D. Dexter '07, S. Clarke '07.

Village boys of Goz--L. T. Swaim '05, H. Nash, Jr., '05, S. K. Becker '06, C. C. Nash '07, F. H. Warner, Jr., '07, C. Wesselhoeft '08.

Suitors of the Duchess--H. Allen '03, D. R. Ayers '05, A. W. Locke '05, C. G. Osborne '07.

Act I..--The village inn at Goz.

Act II.--The wild forest near Goz.

The orchestra, composed of members of the University, will be led by G. R. Jones '05.

Tickets at $1.50, $1, and 75 cents are on sale at Leavitt & Peirce's, Sever's and Herrick's, or may be obtained at the door.