68 A MEDIAEVAL CITY A more elementary and less well organised educa- tion was given by the parish priests and the chantry priests, from whom the children of the city generally, boys and girls, received at least oral instruction. Girls usually received a practical upbringing at home. The only schools for girls were those attached to women's monasteries, oŁ which there was St. Clement's Nunnery alone in York. Educational welfare work, as distinct from direct and organised class-teaching, was carried on by the friars, the religious men who lived under a rule but who went out to work in the world, instead of spending their lives in seclusion as the monks did. The Dominican and Franciscan Friars played an important part in education by teaching, especially at the Universities. Education was also a foremost interest of the Augustinians, who supported a college at Oxford. Books, which had all to be written by hand, were scarce. The copying of manuscripts, which was done mostly in the monasteries, was laborious work. Instruction was given as a rule orally, but also by means of pictorial art and drama. The stained- glass windows were more than ornamental additions to the church building : they were part of the means of instruction. Mediaeval drama had originated in the Church's effort to make events described in the gospel more real through their representation dramatically. ;The teaching of manual skill and craftsmanship was entirely the work of the masters of the crafts under the general supervision of the guilds." The work of the age was made beautiful, and being handwork each piece of work gained the interest of individuality. The details of architectural ornament, in consequence, show wonderful diversity of form.