In the meantime Dürer had added a few to the number of his line-engravings and had completed the two woodcut series of the Great Passion, begun about 1498-1499, and the Life of the Virgin. The new subjects compared with the old show some falling off in dramatic stress and intensity of expression, but on the other hand a marked gain in largeness of design and clearness of composition. In 1511 these two works were brought out for the first time, and the Apocalypse series in a second edition; and for the next three years, 1511-1514, engraving both on wood and copper, but especially the latter, took the first place among Dürer's activities. Besides such fine single woodcuts as the "Mass of St Gregory," the "St Christopher," the "St Jerome," and two Holy Families of 1511, Dürer published in the same year the most numerous and popularly conceived of all his woodcut series, that known from the dimensions of its thirty-seven subjects as the "Little Passion" on wood; and in the next year, 1512, a set of fifteen small copper-engravings on the same theme, the "Little Passion" on copper. Both of these must represent the labour of several preceding years: one or two of the "Little Passion" plates, dating back as far as 1507, prove that this series at least had been as long as five years in his mind. In thus repeating over and over on wood and copper nearly the same incidents of the Passion, or again in rehandling them in yet another medium, as in the highly finished series of drawings known as the "Green Passion" in the Albertina at Vienna, Dürer shows an inexhaustible variety of dramatic and graphic invention, and is never betrayed into repeating an identical action or motive.