Of the authenticity of these Memoirs there appears to be no reasonable doubt, and we believe that none has been expressed. They were found, after the death of Catharine, in a sealed envelope addressed to her son Paul, in whose lifetime no one saw them but the friend of his childhood, Prince Kourakine. He copied them; and, about twenty years after the death of Paul, three or four copies were made from the Kourakine copy. The Emperor Nicholas caused all these to be seized by the secret police, and it is only since his death that one or two copies have again made their appearance at Moscow (where the original is kept) and St. Petersburg. From one of these M. Herzen made his transcript. They fail to palliate any of Catharine's crimes, or in the least to brighten her reputation, and add nothing to our knowledge of her sagacity and her administrative talents; but they are yet not without very considerable personal interest and historical value. _Milch Cows and Dairy Farming_; comprising the Breeds, Breeding, and Management, in Health and Disease, of Dairy and other Stock; the Selection of Milch Cows, with a full Explanation of Guenon's Method; the Culture of Forage Plants, and the Production of Milk, Butter, and Cheese: embodying the most recent Improvements, and adapted to Farming in the United States and British Provinces, with a Treatise upon the Dairy Husbandry of Holland; to which is added Horsfall's System of Dairy Management. By CHARLES L. FLINT, Secretary of the Massachusetts State Board of Agriculture; Author of a Treatise on Grasses and Forage Plants. Liberally illustrated. Boston: Phillips, Sampson, & Co. pp. 416. This very useful treatise contains a full account of the best breeds of cattle and of the most approved methods of crossing so as to develop qualities particularly desirable; directions for choosing good milkers by means of certain natural signs; a description of the most useful grasses and other varieties of fodder; and very minute instructions for the making of good butter and the proper arrangement and care of dairies. The author has had the advantage of practical experience as a dairyman, while his position as Secretary of the Massachusetts Board of Agriculture has afforded him more than common opportunity of learning the experience of others.