109 



Burkitt Webb, J.: A raetbod of eliniinating the personal 

 equation iti transit observatioiis. p.ll8 — 120. — Hamilton, 

 W. E. : Note on a new metbocl of graphically expressing 

 any cyclical fact in nieteorology. p. 121 — 124. — Brewer, 

 W. H. : On the apparent size of magnitied objects. p. 139 

 — 145. — Upton. W.: Tbe spectroscopic rain-baud. 

 p. 145 — 146. — Nichols, E. L.: On the duration of color- 

 impressions upou the retina. p. 146 — 147. — Wead, C. W. : 

 On a mean direotion integratmg anemoraeter. p. 147 — 143. 



— LeConte Stevens. W.: On vision by the light of the 

 electric spark. p. 148 — 149. — id.: The binoeular union of 

 spectral Images, p. 149 — 150. — Graham Bell, A.: lipon 

 the electrical experiments to dctermine the location of the 

 bullet in the body of the late president Garfield: and upon 

 a successful form of induction balance for the painless de- 

 tection of metalhc masses in the human body. p. 151 — 206. 



— Barker, G. F.: On secondary battcries. p. 207 — 217. — 

 Hastin gs, Ch. S.: On modiücatious of the spectrum of 

 sodium vapor iu a Bunsen flame. p. 218 — 220. — Bartlett, 

 J. R.: Siemens' electrical deap-sea thennometer. p. 221 — 222. 



— Carmichael, H.: An Instrument for readily producing 

 low temperatures. p. 223 — 224. — Szabö, J.: On a new 

 microchemical method of determining the feldspars in rocks. 

 p. 257—270. — Bolton, C. H.: Apphcation of organic 

 acids to the examiuation of minerals. Third ])aper. p. 271 

 — 275. — Cook, E. H.: Carbon dioxide as a constituent 

 of the atmosphere. p. 276 — 280. — id.; A simple labora- 

 tory device. p. 281. — Kinnicutt. L. P. and Pahiier. 

 G. M.: The action of water at 100" C. on the ß phenyl- 

 tribrompropionic acid. \). 281—282. — Mabery, C. F. and 

 Wilson, R.: The action of baric hydrate on chlortribrom- 

 propionic acid. p. 282 — 283. — Mabery, C. F. and Ro- 

 binson, F. C: On certain substituted acrylic and pro- 

 pionic acids. p. 283—284. — Mabery, C. F.: On the pro- 

 ducts of the distillation of wood at low temperatures. 

 p. 284. — Leeds, A. R. : Proliminary notice of a new 

 organic base. p. 284. — Wiley, H. W. and Crampton, 

 C. A.: Estimation of dextrose in solid commercial starch 

 sugar by loss of rotatory power on Solution, p. 285. — 

 Wiley, H. W. : Direct estimation of dextrose, dextrine and 

 maitose in commercial amylose (starch sugarV p. 285 — 286. 



— Andrews, L. W. : Ön the Constitution of benzole. 

 p. 286. — Ellis, W. H.: Somo tea analyses, with special 

 reference to tlie determinatiou of caffeine. p. 287—289. — 

 Caldwell. 6. C; Pemberton's method for the Volumetrie 

 determination of phosphoric acid. p. 289 — 291. — Thur- 

 ston, K. H.: On a newly discovered absolute Umit to 

 economical expansion in the steam cngine and in other 

 heat-motors. p. 307 — 311. — Lanza,G. : Transverse strength 

 of large spnice beams. p. 311 — 314. — Burkitt Webb, J.: 

 A method of cutting screws of increasing pitch. p. 314 

 — 316. — id.: Indicator attachment for high speeds. p. 316 

 — 317. — Mars den. S. : Experiments to determine the 

 strength of cyliuders with domes attached. p. 317. — De 

 L'Etoile. 3.: Aerial navigation. p. 318 — 319. — Lynch. 

 W. H.: The future of the balloon as a practical means of 

 aerial travel, p. 319 — 321. — Hitchcock, C H.: The 

 glacial flood of the Connecticut river valey. p. .326 — 329. 



— Owen, R.: Contribution to seismology. p. 329 — 336. — 

 id.: Law of fracture. or flssuring. applied to iiiorganic and 

 organic matter, p. 337 — 344. — Hovey, H. C. : Subterrauean 

 map-making. p. 345 — 348. — Bartlett, J. R.: Deap-sea 

 soundings and temperatures in the Gulf Stream oö' the 

 Atlantic coast, taken under the direction of the U. S. coast 

 and geodetic survey. p. 349 — 352. — Whittlesey, Gh.: 

 Preglacial Channel of Eagle River. Michigan, p. 352. — 

 Whiteaves, J. F.: Recent discoveries of fossil fishes in 

 the devonian rocks of Canada. p. 353 — 356. — id.: Note 

 on the occurrence of Siphonotreta Scotica (Dadvidson) in 

 the ütica formation near Ottawa. Ont. p. 356 — 357. — 

 Britton, N. L.: On a post-tertiary deposit containing 

 impressions of leaves in Oumberland county, New .Jersey, 

 p. 357 — 359. — Spencer. J. W.: Terraces and beaches 

 about Lake Ontario. p. 359 — 363. — id.: Occurrence of 

 graptolites in the Niagara formation of Canada. p. 363 



— 365. — Lock wo od, S.: A Mastodon Americanus in a 

 beaver meadow. p. 365— 366. — Huribert, J. B.: Currents 



Leop. .XX. 



of air and ocean in connection with climates. regions of 

 Summer rains and summer droughts. p. 367 — 372. — 

 Orton, E.: A source of the bituminous matter of Black 

 Shales of Ohio. p. 373 — 384. — Dwight, W. B.: Recent 

 investigations and palaeontological discoveries in the Wap- 

 pinger limestone of Dutchess and iieighboring counties. 

 New York State, p. 384 — 387. — Perkins.G. H.: The 

 Winooski marble of Vermont, p. 388. — Lewis, H. C. : 

 The great terminal moraine across Pennsylvania, p. 389 

 —398. — Warder, R. B.: The silicified Stumps of Colo- 

 rado, p 398—399. — Cook.G. H.: The change of relative 

 level of the ocean and the uplands on the eastern coast 

 of North America, p. 400 — 408. — Crosby, W. 0.: On 

 the Classification and origin of Joint structures. p. 409 — 411. 

 — ■ Williams, H. S.: The undulations of the rock-masses 

 across central New York State, p. 412. — Merritt, W. H. : 

 Occurrence of magnetic ore deposits in Victoria county. 

 Ontario. p. 413 — 415. — Dawson,J. W.: Comparative view 

 of the successive palaeozoic floras of Canada. p. 415 — 416. 



— Walling, H. F.: On the origin of joüit cracks. p. 417 

 — 418. — Hare, R. B.: On the association of crystals of 

 quartz and calcite in parallel position. p. 419. — Meehan. 

 T.: Variations in nature. A contribution to the doctrine of 

 evolution. and the theory of natural solection. p. 437 — 448. 



— Asa Gray: Remarks conceruing the flora of North 

 America, p. 449 — 460. — Ward, L. F.: On the position 

 of the Gamopetalae. p. 460 — 462. — James. J. F.: A re- 

 vision of the genus Cleniatis of the United States, p. 463. 



— Macloskie. G,: Achenial hairs and fibres of compo- 

 sitae. p. 463 — 464. — Bessey, C. E. : Some observations 

 on the action of frost upon leaf-cells. p. 464 — 465. — 

 Beal, W. ,T. ; The motions of roots and radicles of Indian 

 corn and of beans. p. 466. — Riley. C. V.: Observations 

 on the fertilization of Y'ucca and on structural and anato- 

 mical j)ecularities iu Pronuba and l'rodoxus. p. 467 — 468. 



— id.: The hibernation of Aletia Xylina (,Say), in the 

 United States a settled fact. p. 468 — 469. — id.: Emulsions 

 of petroleum and their value as insecticides. p. 469 — 470. 



— Lintner. J. A. : A new se.xual eharacter in the pupae 

 of some Lepidoptera. p. 470 — 471. — id.: On an ogg-pa- 

 rasite of the currant Saw-fly, Nematus ventricosus. p. 471 

 — 472. — Macloskie. G. : Observations on the elm-leaf 

 beetle. Galeruca XaiUhomelaena. p. 472 — 473. — Buck- 

 hout, W. A.: On the gall-mites Phytoptus. p. 473 — 477. 



— Cope, E. D.: The Classification of the Ungulata. p. 477 

 — 479. — id.: The fauna of the Puerco Eocene. p. 479 

 — 480. — Whiteaves, .1. F.: On a recent species of 

 Heteropora from the Strait of Juan de Fuca. p. 481—482. 



— Wilder. B. G.: On the habits of Cryptdbranclms. 

 p. 482—483. — Marcy. H. 0.: The placental development 

 in mammals: a unity of anatomical and physiological mo- 

 dality in all vertebrates. p. 483—488. — Baker, F.: The 

 morphology of Arteries. p. 488—489. — Bowditch, H. P. 

 and Hall, G. S.: Illusions of motion. p. 489—491. — 

 Osler, W.: Demonstration of a series of brains prepared 

 by Giacomini's method. p. 491. — Black well, A. B.: Gross 

 heredity from sex to sex. p. 492 — 493. — Ward, L. F.: 

 The organic Compounds in their relations to life. p. 493 

 — 494. — id.: Classification of organisms. p. 494 — 495. — 

 Eisberg. L.: Plant-„cells'' and hving matter, p. 511. — 

 Osler. W.: The third corpuscular Clement in the blood. 

 p. 511 — 512. — id.: The development of blood corpuscles 

 in the bone-niarrow. p. 512. — id.: Note on the Micro- 

 cytes in the blood and their probable origin. p. 512 — 513. 



— Marcy, H. 0.: The histology of utorine fibroid tumors. 

 Illustrateu by a series of micro-photographs. p. 513 — 514. 



— Burrill, J. T.: Some vegetable poisons. p. 515 — 518. 



— Penhallow, D. P.: Notes on some of the structural 

 and physiological pccularities iucident to the diseases of 

 fruits. p. 519 — 521. — Libbey. W.: A new form of con- 

 stant pressure injection apparatus. p. 521 — 525. — Hana- 

 man, C. E. : A filtering wash- bettle especially adapted to 

 the use of the histologist. p. 525— 527. — Pill sbury. J. H.: 

 Development of the planula of Clava hptostyla. p. 527. — 

 Wilson, D.: Some physical characteristics of native tribes 

 of Canada. p. 531—558. — Halfburton. R. G.: Notes on 

 mount Atlas and its traditions. p. 559 — 568. — Phene. 



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