NEUTRINO MASSES

67 years after neutrinos had been introduced into physics many of thei r properties remain unknown. An open question of whether neutrinos hav e masses is addressed in the present lecture. After reviewing briefly limits on neutrino masses obtained in direct experiments, indirect sea rches for neutrino masses are discussed. Particular attention is paid to the search for neutrino oscillations. The Sun is a particularly str ong source of neutrinos and for this reason has been used for pertinen t experiments. The different solar neutrino experiments are compared i n the lecture.