Summary in English.Bibliography: pages 82-83.The possibility of muon-catalysed dd fusion via a Vesman-type mechanism in an organic crystal of deuterated anthracene is considered. In order to test this possibility the production of muons by 200 Me V protons incident on a 1mm Pb target is investigated. Two experiments to search for evidence of muon-catalysed fusion in a cylindrical deuterated anthracene crystal (9 mm diameter by l20 mm length) are described. The results indicate, tentatively, a fusion rate of 0.2 - 1.1 per incident μ-
