manner of
With regard to vase painting, Beazley writes: "I am conscious that the vases placed under the heading 'manner of' an artist are not always in the same category: the list may include (1) vases which are like the painter's work, but can safely be said not to be from his hand, (2) vases which are like the painter's work, but about which I do not know enough to say that they are not from his hand, (3) vases which are like the painter's work, but of which, although I know them well, I cannot say whether they are from his hand or not." (ABV, p. x) Although this term is used in slightly different ways by Beazley, it is clear that he uses it when he is certain that the work of one artist dominates a particular period. As suggested by Robertson, it seems to be oftentimes used to describe the work of painters who were influenced by a central, highly productive artist of the time.