i 5 4 THE POPULAR SCIENCE MONTHLY. 



VOL. PAGE 



Sewer-Gas and its Dangers. G. P. Brown xix 858 



-Gases. A. De Varona xv 274 



Sex in Education. E. H. Clarke iv 377 



Sexes throughout Nature. A. B. Blackwell vii 370 



Shade-Trees, Indigenous Shrubs, and Vines. T. Stewart xi 504 



Ship of Fools. Translated by Alexander Barclay v 752 



Ships, Free. John Codman xvii 127 



Sight. Joseph Le Conte xix 272 



Signal Officer, Annual Eeport of the Chief (1879) xx 416 



Sign-Language of North American Indians. G. Mallery xvii 566 



Silk Goods of America. W. C. Wykoff xvi 419 



Silk-Worm, The. C. V. Riley xvi 423 



Silver Country, The. A. D. Anderson xii 753 



in its Relation to Industry and Trade. William Brown xvii 567 



Singing, The Art of. F. Sieber xv 420 



Skin, Diseases of the. L. A. Duhring xi 119 



in Health and Disease. L. D. Bulkley xviii 420 



Smith, Adam. J. A. Farrer xix 122 



Gerrit. O. B. Frothingham xii 634 



Smithson, James, and his Bequest. Scientific Writings of. W. J. Rhees. xviii 848 

 Smithsonian Miscellaneous Collections. F. W. Clarke v 499 



Reports v 501 ; viii 240 ; xi 375 ; xii 505 ; xiv 683 ; xx 417 



Social Science, Basis of. R. J. Wright x 622 



Present Status of. R. S. Hamilton v 122 



Ancient. L. H. Morgan xi 758 



Sociology, Descriptive. Herbert Spencer iii 517 ; iv 504 ; viii 752 



Principles of. Herbert Spencer vi 372 ; vii 491 ; xi, 112, 247 



Solar Light and Heat, The Source and Supply of: Z. Allen xvi 567 



Physics, Contributions to. J. N. Lockyer v 120 



System, Certain Harmonies of the. S. Alexander vii 624 



Solubility, Contributions to the Theory of. I. Walz vii 754 



Soluble Glass, Practical Treatise on. L. Feuchtwanger viii 500 



Songs of Great Poets xiv 401 



Sorghum and Corn-stalks, Work done on, by the Department of Agri- 

 culture. P. Collier xx 131 



Soul, The, and the Resurrection. J. II. Kellogg xiv 29 



Problems, etc. J. E. Peck viii 756 



Sound. A.M.Mayer. (Experimental Science Series.) xiii 503 ; xiv 115 



and its Relation to Music. P. Blaserna x 240 



Elementary Lessons in. W. H. Stone xvi 852 



South Missouri State Normal School, Catalogue of. J. Johonnot v 636 



Species, The Human. A. De Quatrefages. (International Scientific 



Series.) xv 560 



Spectra observed near the Solar Limb, Fugitive. M. L. Trouvelot. . . . xvii 700 



Spectroscope, Assaying by the v 758 



Spectrum Analysis. J. N. Lockyex. (International Scientific Series.), xiii 244 



Schellen i 242 ; ii 116 



Speech, How to tell the Parts of. E. A. Abbott xix 419 



Spelling Reform, The xx 417 



Spencer, The Philosophy of. B. P. Browne v 248 



Spinoza, Ethics of x 244 



