Owing to the presence of scarlet fever in Cambridge, and to the appearance of a few cases in the University, it seems wise to offer protection to those who wish it. By a simple test (the "Dick" test) it is possible to determine accurately within 24 hours whether a person is susceptible to scarlet fever. By a series of five inoculations at weekly intervals immunity is securable, which becomes operative about two weeks after the beginning of the treatment, and which lasts for several years. A subsequent "Dick" test will show the success of the inoculations. The test will be given to any student desiring it, at the Stillman Infirmary on Thursday afternoons between 3 and 4 o'clock for several weeks. The charge for the test will be $1.00, and, for the inoculations and subsequent test, $3.00. The charge will be payable on the term bill.