Architectural Acoustics.

Professor Sabine has recently published a valuable pamphlet on architectural acoustics, dealing with reverberation. He has worked out and demonstrated as facts, matters about which nothing has been known hitherto. In designing halls and auditoriums, the question of acoustic properties has been one incapable of scientific solution before the completion of a building, but by the laws which Professor Sabine has worked out, good results can be assured at the start. He has made a study of halls all over the country, and in the construction of the new Boston Music Hall the arrangement of seats and galleries and other minor matters of construction relating to the acoustic properties of the hall were made according to his advice.