218 ALPHABETICAL INDEX 



Interpolation, methods of, applicable to graduation of irregular series. Parts 



I, II.— E. L. De Forest. (K. 1871; K. 1873) 249, 275 



Introduction, letters of. (R. 1865) 209 



Introduction to study of Coptic language — M. Kabis. (R. 1867) 215 



Invertebrata, marine, from New England coast distributed by United States 



Fish Commission, list of— A. E. Verkill ; R. Rathbun. (P. 1879)-_- 333 



Invertebrata, marine, of Grand Manan — W. Stimpson 50 



Invertebrata, marine, of northeastern coast of America, notice of recent addi- 

 tions to — A. E. Verrill : 



Part I. Annelida, etc. (P. 1879) 333 



Part II. Mollusca, w\th notes on Annelida, etc. (P. 1880) 425 



Part III. Catalogue of Mollusca recently added to fauna of southern New 



England. (P. 1880) 425 



Invertebrate fossils — 



checl^-list of— T. A. Conrab 200 



from Arkansas, Wyoming, Colorado, and Utah, descriptions of new — 



C.A.White. (P. 1880) 425 



of North America, check-list of— F. B. Meek 177, 183 



report on — F. B. Meek; F. V. Hayden 172 



Invertebrates, marine, distributed by U. S. National Museum, list of — R Rath- 

 bun. (P. 1881) 465, 467, 471 



Invertebrates — See Marine invertebrates. 



Investigation of — 



anatomy and physiology of the rattlesnake — S. W. Mitchell 135 



disturbances of horizontal component of magnetic force — A. D. Bache__ 162 



disturbances of vertical component of magnetic force — A. D. Bache 175 



eleven year period in amplitude of solar-diurnal variation and disturb- 

 ances of magnetic declination — A. D. Bache 113 



illuminating materials— J. Henry. (R. 1880) 442, 389 



influence of moon on magnetic declination — A. D. Bache 132 



orbit of Neptune and tables of its motion — S. Newcomb 199 



orbit of Uranus, with tables of its motion — S. Newcomb :. 262 



Investigations — 



anthropological, in 1879—0. T. Mason. (R. 1879) 345, 420 



archieological, instructions for — Gr. Gibbs. (R! 1861) 149 



chemical and physiological, relative to certain American vertebrata — J. 



Jones t 82 



of Biela's comet— J. S. Hubbard. (R. 1862) 150 



scientific, in Russian America, suggestions relative to — J. Henry 207 



Iowa — 



ancient relics in — J. B. Cutts. (R. 1872) 271 



Delaware county, mounds in — M. W. Moulton. (R. 1877) 323 



Muscatine county, mounds in — T. Tuomp.son. (R. 1879) 345 



Irby, J. R. McD. Works and character of Smithson 327 



