— 233 — 



Meteorite from Mexico. 439. — E. 9. Dana : Contributions to the Petro- 

 graphy of the Sandwich Islands (PI. XIV). 441. — T. M. Chatard : De- 

 termination of Water and Carbonic Acid in Natural and Artificial Salts. 

 468. — A. E. Bostwick: Preliminary Note on the Absorption Spectra of 

 Mixed Liquids. 471. — C. C. Hutchins : Notes on Metallic Spectra. 474. 



— M. Carey Lea: Allotropic Forms of Silver. 476. 



17) Proceedings of the Academy of Natural Sciences of 

 Philadelphia. 8°. Philadelphia. [Jb. 1889. I. -371-.] 



Part III. October— Deoember 1888. — J. Leidy: Megalonyx Jeffer- 

 sonii. 273. — H. F. Osborn : Additional observations upon the structure 

 and Classification of the Mesozoic Maramalia. 292. — A. Heilprin : Contri- 

 butions to the Natural History of the Bermuda Islands (PI. XIV — XVI). 

 302. — Ch. Wachsmuth und Fr. Springer: Discovery of the ventral 

 structure of Taxocrinus and Haplocrinus and consequent modifications in 

 the classifications of the Crinoidea (PI. XVIII). 337 ; — Crotalocrinus : its 

 structure and zoological position (PI. XIX , XX). 364. — Ch. Morris : 

 Theories of the formation of Coral Islands. 419. 



18) Proceedings ofthe Boston Society of Natural History. 

 8°. Boston. [Jb. 1887. II. -228-.] 



XXIII. Part III. Febr. '1886 bis Dec. 1887. — W. C. Crosby and 



G. H. Barton : On the Great Dikes at Paradise, near Newport. 325. — 



H. W. Haynes : Localities of Quarries worked by the Indians for material 

 for their Stone-Implements. 333. — Wm. M. Davis : On the Mechanicai 

 Origin of the Triassic Monoclinal in the Connecticut Valley. 339. — J. H. 

 Emerton: On the Restoration of the Skeleton of Dinoceras mirabile. 342. 



— J. Marcou: On the Use of the name Taconic. 343. — S. H. Scudder: 

 Cockroaches from the Carboniferous Period. 356. — A. Hyatt : Values in 

 Classification of the stages of Growth and Decline, with propositions for a 

 New Nomenclature. 396. — N. S. Shales : Origin of the divisions between 

 the layers of Sfratified Rocks. 408. 



Part IV. Dec. 1887 bis May 1888. — N. S. Shales (s. o. conclusion). 

 417. — G. F. Wright : On the origin of the Ohio gravel-beds (with figu- 

 res). 427. — W. Upham: The recession of the ice-sheet in Minnesota in 

 its relation to the gravel deposits overlying the quartz implements found 

 by Miss Babbitt at Little Falls, Minn. 436. — W. 0. Crosby: Geology of 

 the outer islands of Boston Harbor. 450. — Fr. H. Nowell : Niagara 

 cephalopods from northern Indiana (with figures). 466. — W. 0. Crosby: 

 Geology of the Black Hills of Dakota. 488. — J. W. Fewkes : On the 

 origin of the present form of the Bermudas. 518. 



19) Geologiska Föreningens i Stockholm Förhandlingar 

 [Jb. 1889. I. -534-.] 



Band 11. Hafte 2. — A. E. Törnebohm: Nägra notiser frän en geo- 

 logisk resa i Telemarken. 46. — B. Lundgren: Om Kritfaunan vid Tor- 

 marp i Halland och de halländska Kritbildninganies förhällande tili öfriga 

 svenska. 63. — E. Erdmann : Huru böra Kartbladsserier lämpligast för- 



