The work of the R. F. C., under Brig. Gen. Webb-Bowen, during the period under review (says Sir Herbert) has been quite brilliant. From the moment of arrival they made their presence felt, and very soon overcame the difficulties of the mountains. They have taken part in all operations, and rendered much assistance to the Italians in the air. They have carried out a large number of successful raids on enemy aerodromes, railway junctions, &c., and have during the period destroyed sixty-four hostile machines, a large proportion of which were German, and nine balloons, our losses to the enemy during the period being twelve machines and three balloons. A comparison of the photographs of hostile battery positions when our artillery entered the line with the positions now occupied shows that the enemy batteries have been successfully forced back almost throughout the whole front. Some British artillery assisted both in French and Italian operations, and a frequent interchange of British and Italian batteries was made, together with counterbattery staff officers, in order that experience of each other's methods might be gained. Every effort was made to illustrate the value of counterbattery work, the value of which we had learned by experience in France, but which the Italians had not hitherto fully appreciated. "The Italians were only too anxious to profit by any experience we could give them, and this was done not only by frequent interchange of visits of commanders and staffs to the various sectors of defense, but by the establishment of schools of instruction, at which a large number of Italian officers actually underwent the courses. About 100 Italian officers attended the courses at the various schools, together with some French officers. Similarly, British officers underwent courses at French and Italian schools." Sir Herbert thanks the Italian authorities for their assistance, especially General Diaz, Chief of the Staff, and expresses indebtedness to Generals Fayolle and Maistre, in command of the French troops. Emperor Charles's "Dear Sixtus" Letter French Supplemental Statement Corroborates Its Authenticity The publication of the letter of Emperor Charles of Austria to his brother-in-law, Prince Sixtus, in which he sought a separate peace with France, referring to the "just claims" of France to Alsace-Lorraine, and which caused the downfall of Count Czernin, the Austrian Foreign Secretary, was followed by this official denial by the Austrian Government: