Abstract
This paper contains the results of a re-examination of all the photographic material obtained with the Schmidt telescope in Tonantzintla on the Orion association between the years 1955 and 1981. During this re-examination 116 flare-ups were detected, of these, 38 correspond to new flare stars and 78 are flare-up repetitions of known flare stars, mainly discovered at Tonantzintla. Four of these were recently observed at Abastumani and Rogen Observatories.
