Muons and neutrinos.

It is pointed out that a large number of underground muon events and neutrino interactions have been observed recently. A large part of the data have been obtained with the aid of nucleon decay detectors which have recently come into operation. Cosmic ray neutrino interactions are routinely detected by recently built huge underground detectors. A description of muon results is presented, taking into account the muon spectrum and charge ratio, prompt muons, multiple muon events, and aspects of muon interactions. In a review of neutrino results, attention is given to atmospheric neutrino and neutrino oscillation calculations, calculations of expected extraterrestrial neutrino fluxes, and neutrino observations and analyses of neutrino data.