Trogus Pompeius

In Hannay and Dietrichsen's *Almanuck for the Year* 1849, I find the following statement under the head of "Remarkable Occurrences of the Year 1847:"— "July 21. A portion of the history of Trogus Pompeius (the author abridged by Justin) is discovered in the library of Ossolinski at Berlin." Not having noticed any contemporary account of this occurrence, I should be glad of any information respecting the nature and extent of the discovery.