Having received from Sir Charles Hartley an interesting record of the works executed for the improvement of the Danube, to be presented to one of the Public Libraries in Edinburgh, I think its fittest destination is the Royal Society; and, on behalf of Sir Charles Hartley, I have to present the volumes on the table for the Society's acceptance.

It may not be uninteresting, in presenting these books, to describe, in a very few sentences, the work that has been executed for the improvement of the Danube, and the results that have been obtained.