The Byzantine architects used pierced stonework with great effect both in exterior and interior detail. The examples here shown are rather crude, but effective in the relative scale of parts. [Illustration: XXX. Window in the Apse of the Cathedral, Bari, Italy.] XXX. WINDOW IN THE APSE OF THE CATHEDRAL, BARI, ITALY. The ornament about this window, especially that in the long panel below it and upon the cyma of the soffit above, is Byzantine in character, while the columns, with the exception of the capital of the one at the left, are much more Romanesque. [Illustration: XXXI. A Window in Bittonto, Italy.] XXXI. A WINDOW IN BITTONTO, ITALY. This is not an especially beautiful example, but is an illustration of the direct and vigorous treatment of the early barbarian Romanesque builders. [Illustration: XXXII. Window in the Apse of the Cathedral, Bittonto, Italy.] XXXII. WINDOW IN THE APSE OF THE CATHEDRAL, BITTONTO, ITALY. In this case the beautiful and delicate Byzantine leafage can be seen on the mouldings of the arch above the window. As in several of the preceding examples, there is a curious mixture of the two styles. The Brochure Series of Architectural Illustration. PUBLISHED MONTHLY BY BATES & GUILD, 6 BEACON STREET, BOSTON, MASS. Subscription Rates per year. 50 cents, in advance. Special Club Rate for five subscriptions.. $2.00. Entered at the Boston Post Office as Second-class Matter. * * * * * Several weeks ago the stock of back numbers of THE BROCHURE SERIES held to fill subscription orders was exhausted, and in future all subscriptions will have to be dated from the number current at the time the subscription is placed. All who wish to have the remaining numbers of this year should subscribe at once, as no back numbers will be kept in stock. The edition has been increased to 7,000 copies, and if the present rate of growth in the subscription department holds will shortly have to be doubled. * * * * * The judges in the recent competition for the Rotch Travelling Scholarship, Messrs. Cass Gilbert, George B. Post, and Frank Miles Day, have awarded the scholarship to William S. Aldrich. Mr. Aldrich has taken the examinations this year for the first time, although several of his unsuccessful rivals for the honor have entered before in years past. He has been for some time in the office of Mr. C. H. Blackall, and has been engaged upon important work, such as the new Tremont Temple, which is now approaching completion.