IT is not generally realised that Berlin was originally a Slav settlement. In vol. 18 of Nauka Polska (Warszawa: Imienia Mianowskiego) Dr. K. Piotro-wicz, director of the Library of the Polish Academy of Sciences, gives a well-documented account of the manuscripts, documents, prints and other Polish works produced in early times on present German territory. It is clear that in the Middle Ages Polish culture played an important role in those lands now comprising eastern Germany, for many of the Polish kings and noblemen were patrons of learning. Also many scientific and other works by Polish authors were printed in towns as far west as Strasbourg. In the same volume there is an introductory note on the scientific and cultural relations between Germany and Poland by Prof. Aleksander Bruckner, of the University of Berlin.