An experiment that ran for 151 days produced signals that suggested the presence of one of these constructs named after a holiday. That experiment is consistent with the proposed (15[1])upper limit for the number of these constructs, which is one per 10-to-the-29 (15[1])nucleons. (-5[1])The expression [read slowly] “2 q-sub-e q-sub-m (15[1])all over h-bar c” must (15[1])be an integer in a physicist’s (15[2])namesake quantization condition (15[2])involving (-5[1])these constructs. (*) Dyons with no (10[1])electrical charge are equivalent (10[1])to these particles. To explain the topological properties (10[1]-5[1])of these particles, Dirac proposed (10[1])his namesake “strings.” The existence of these particles does not (10[1])agree (10[5])with Gauss’s law (10[2])because (10[1])the divergence (10[3])of the magnetic field (10[2]-5[1])would be non-zero. (10[1])For 10 points, (10[1])name these particles that only contain a (10[1])north (10[1])or south pole, unlike (10[2]0[1])magnetic dipoles. ■END■