Had all the writings of these various workers been preserved to us, we should have abundant material for reconstructing the history of the entire later classical epoch in much detail; but, unfortunately, the historian worked with perishable materials. An individual papyrus or parchment roll could hardly be expected on the average to be preserved for more than a few generations, and unless copies had been made of it in the meantime, the record that it contained must inevitably be lost. Such has been the fate of the great mass of historical writings, no less than of productions in other fields of literature. Many of the fragments of ancient writers have come down to us through rather curious channels. In the later age of Rome it became the fashion to make anthologies and compilations, and it is through such collections that the majority of classical authors are known. One of the most curious of these anthologies is that made by Athenæus about the beginning of the third century A.D. This author called his work _Deipnosophistæ_, or the _Feast of the Learned_. He attempted to give it a somewhat artistic form, making it ostensibly a dialogue in which the sayings of a company of diners were related to a friend who was not present at the banquet. The diners were supposed to have introduced quotations from the classical writers, so that the book is chiefly made up of such quotations. The work has not come down to us quite in its entirety, but, even so, no fewer than eight hundred authors and twenty-five hundred different works are represented in the anthology. Of these authors about seven hundred are known exclusively through the excerpts of Athenæus.