Report on Iron, by _J. H. Alexander_, xli, 376. ---- on herbaceous plants of Massachusetts, by _C. Dewey_, xli, 378. ---- on the quadrupeds of Massachusetts, by _E. Emmons_, xli, 378. ---- on insects injurious to vegetation, by _T. W. Harris_, noticed, xliii, 386. ---- on the invertebrata of Massachusetts, _A. A. Gould_, xli, 378. ----, fishes, reptiles and birds of Massachusetts, xxxviii, 379, 393. ---- on the fishes of New York, by _J. E. Dekay_, reviewed, xlv, 275. ----, Geological, of Connecticut, by _C. U. Shepard_, noticed, xxxiii, 151. ----, ----, ----, by _J. G. Percival_, noticed, xliv, 187. ----, ----, of Indiana, by _D. D. Owen_, noticed, xxxiv, 193; xl, 133. ----, ----, of Maine, by _C. T. Jackson_, noticed, xxxii, 193; xxxv, 387; xxxvi, 143; xxxvii, 376. ----, ----, of Maryland, by _J. T. Ducatel_, noticed, xxvii, 1; xxx, 393; xxxii, 191. ----, ----, of Massachusetts, by _E. Hitchcock_, xxii, 1^f; xxiii, 389; xxvi, 213; xxxvi, 363; xli, 384. ----, ----, of Michigan, by _D. Houghton_, xxxiv, 190; xl, 136. ----, ----, of New Hampshire, by _C. T. Jackson_, noticed, xli, 383; xlviii, 393; xlix, 27. ----, ----, of New York, annual, noticed, xxxii, 186; xxxvi, 1; xxxix, 95; xl, 73; xlii, 227. ----, ----, ----, final, reviewed, xlvi, 143; xlvii, 354^f; xlviii, 296.^f ----, ----, of Ohio, noticed, xxxii, 190; xxxiv, 196, 347^f; xl, 126. ----, ----, of Pennsylvania, by _H. D. Rogers_, noticed, xxxii, 192; xxxiv, 188; xxxvii, 380. ----, ----, of Rhode Island, by _C. T. Jackson_, noticed, xl, 182. ----, ----, of Tennessee, by _G. Troost_, noticed, xxx, 391; xxxiv, 187. ----, ----, of Virginia, by _W. B. Rogers_, noticed, xxxii, 192; xxxvii, 380. ----, ----, of Western States, _G. W. Featherstonhaugh_, xxviii, 379; xxxii, 185. Reptiles, fossil, notice of _T. Hawkins's_ work on, xxvii, 413. ----, ----, notice of _R. Owen's_ report on, xlii, 328. ----, on the geological age of, _G. A. Mantell_, xxi, 359. ----, monograph on, _D. H. Barnes_, xi, 268. ---- of Connecticut, catalogue of, _J. H. Linsley_, xlvi, 37. ----, see farther under _Zoology_. Resin, Maynas, xlix, 194. ----, guaiac, xlix, 194. ----, _J. F. W. Johnston_, xli, 53. Resistance of the air to railway trains, xxxviii, 136. ---- of fluids, general principles of, _L. R. Gibbes_, xxvii, 135. ---- ----, _A. Bourne_, xxviii, 230. ---- ----, _G. W. Keely_, xxviii, 318^f; xxx, 164; xxxi, 111. ---- ----, _E. W. Blake_, xxix, 274; xxx, 359. ---- ----, _J. S. Russell_, xxix, 351; xxxv, 317. Resisting medium, some of the probable effects of, _T. H. Perry_, xxxviii, 246. ---- ----, remarks on, xvii, 389. ---- ----, see farther, _Ether_.