In 1877 a series of paintings at St-Lazare Station had Monet looking at smoke and steam and the way that they affected colour and visibility, being sometimes opaque and sometimes translucent. He was to further use this study in the painting of the effects of mist and rain on the landscape. The study of the effects of atmosphere was to evolve into a number of series of paintings in which Monet repeatedly painted the same subject (such as his water lilies series) in different lights, at different hours of the day, and through the changes of weather and season. This process began in the 1880s and continued until the end of his life in 1926.