INDEX. 



Page. 



Acoustics, applied to public buildings, Lecture on, by Prof. Henry 221 



Origin of plan of Smithsonian lecture room 221 



General views on architecture 222 



Experiments on sound 223 



Echo 224 



Limit of perceptibility 225 



Eeflection of sound 226,230 



Reverberation of sound 226 



Increase of temperature. 229 



Conduction of sound 228 



Eefraction of sound 231 



Description of Smithsonian lecture room ,. 233 



Acoustics of buildings, Reid's lectures on 147 



Agassiz, Prof., Suggestions by, as to special collections in natural history 42 



Algee of the United States, Prof. Harvey's Work on 29 



American Pomolo^cal Society, Downing Monument 23 



Ammonia-coVialt bases, Gibbs and Genth's Researches 28 



Analysis of Marble used for United States Capitol 307 



Ancient Indian Remains near Prescott, C. W 271 



Appendix, Object of 92 



Architecture, General Views on 222 



In Relation to Ventilation, &c 147 



In relation to ventilation, warming, lighting, fire-proofing, acous- 

 tics, and the preservation of health, Lectures on, by D. B. Reid.. 147 



Position of man on the globe _ - 147 



Duration of life 148 



Sources of disease 149 



Principles of ventilation 151 



Drainage of cities.. _ 149 



Illustrations of the movement of air 151 



Respirations, experiments on.. - 153 



Carbonometer, description and uses of 155 



Stoves, peculiarities of - 157 



Steam apparatus for heating buildings -- 157 



Hot water apparatus for heating buildings 157 



Cooling, moistening, and drying of air 158 



Ventilation of individual rooms 160 



The best means for effectmg ventilation 161 



Examples of, in different rooms 162 



Best form of shaft or flue 163 



Condition of houses in Europe 163 



