Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 638
rooms or edifices adapted for these purposes some knowl-edge of the general principles of acoustics, and their practical application, isnecessary. In the case of lecture-rooms and churches, the positions of thespeaker and the audience are fixed ; in theatres, one portion of the inclosedspace is…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Bicknell's village builder. Elevations and plans for cottages, villas, suburban residences, farm houses [etc.] also exterior and interior details for public and private buildings, with approved forms of contracts and specifications. Containing fifty-five plates drawn to scale (1872)](https://img.insideoutlibrary.com/img/200/ia-bicknellsvillage00bick-128-104.webp)
