140 CANADIAN INSTITUTE. 



the audience, and as the difference of the distance travelled by the two rays is 

 much within the limit of perceptibility, no confusion is produced by direct and. 

 reflected sound. No echo is given off from the ceiling, for this is also within the 

 limit of perceptibility, while it assists the hearing in the gallery by the reflection 

 to that place of the oblique rays. 



Again, on account of the oblique walls behind the speaker, and the multitude of 

 surfaces, including the gallery pillars, stair screens, <fec, as well as the audience, 

 directly in front, all reverberation is stopped. 



The walls behind the speaker are composed of lath and plaster, and therefore 

 have a tendency to give a more intense though less prolonged sound than if of 

 solid masonry. They are also intended for exhibiting drawings to the best advan- 

 tage. 



The architecture of this room is due to Captain Alexander, of the Corps of 

 Topographical Engineers. He fully appreciated all the principles of sound which 

 I have given, and varied his plans until all required conditions, as far as posssible, 

 were fulfilled. 



CANADIAN INSTITUTE. 

 Session— 1856-57. 

 first ordinary meeting — Saturday, 6th December, 1856. 

 E. A. Meredith, Esq., LL.B., Vice President, in the Chair 

 The following Gentlemen, provisionally elected by the Coimcil during the recess, 

 were Balloted for and declared duly elected Members ; 

 A. T. Augusta, Esq., Yonge St., Toronto. 

 Robt. Armour, Esq., Bowmanville, C. W. 

 Isaac Buchanan, Esq., Hamilton, C. W. 

 James Brown, Esq., Toronto, C. W. 

 J. Beatty, Juur., Esq., M. D., Cobourg, C. W. 

 G. G. Bird, Esq., M. D., Bowmanville, C. W. 

 Rev. R. G. Cox, Wellington, P. E. District, C.W. 

 Ed. Fitzgerald, Esq., Toronto, C. W. 

 A. J. Ferbusson, Esq., M.P.P., Guelph, C. W. 

 Rev. Robt. Irvine, D.D., Hamilton, C.W. 

 Edgar J. Jarvis. Esq., Toronto, C. W. 

 Rev. Professor Kendall, Trinity College, Toronto, C. W. 

 Rev. J. Laing, Scarborough, C. W. 

 H. H. Meredith, Esq., Port Hope, C. W. 

 Dan. MoLellan, Esq., Hamilton. C. W. 

 John McBride, Esq., Toronto, C. W. 

 Revd. D. Pierce, Kingston, C. W. 

 J. P. Russell, Esq., M.D., Quebec, C. E. 

 J. W. Tate, Esq., Belleville, C. W 

 W. G. Tomkins, Esq., C. E., Hamilton, C. W. 

 Major F. Wells, 1st Royal Regiment of Foot. 

 Rev. W. S. Darling, Toronto, C.W. 

 Hon. L. T. TD&ummond:, M. P. P. Montreal, C. E. 



