﻿- 429 — 



some fossil plants from northern China. 172—177. — P. Stock: On the 

 Structure and Affinities of the Genus Tristychina Ag. (pl. VII) 177—190. 



Vol. XII. No. 70. Oct. 1883. — Rupert Jones: Notes on the Palaeo- 

 zoic Bivalved Entomostraca. No. XVI. (pl. VI a. IX) 243—249. 



11) The American Journal of Science and Arts. 3rd Series. 

 [Jb. 1883. II. -300-] 



Vol. XXVI. No. 152. Aug. 1883. — *0. C. Marsh: Principal charac- 

 ters of American Jurassic Dinosaurs. Part VI. Restoration of ßrontosaurus. 

 (pl. I) 81. — E.Andrews: Glacial markings of unusual forms in the Lau- 

 rentian Hills. 99. — S. A. Miller: Response to the remarks of Messrs. 

 Wachsmuth and Sringer on the genera Glyptocrinus and Reteocrinus. 105. 

 — W. J. McGee: Present Status of the eccentricity theory of glacial 

 climate. 113. — C. A. White: Commingling.of ancient faunal and modern 

 floral types in the Laramie Group. 120. — J. S. Newberrt: Note on some 

 fossil plants from Northern China. 123. — 0. C. Marsh : Supposed human 

 footprints recently found in Nevada. 139. 



Vol. XXVI. No. 153. September 1883. — A. Guyot: Existence in both 

 hemispheres of a dry zone and its cause. 161. — G. F. Becker : Relations 

 of temperature to glaciation. 167. — S. L. Penfield : Analyses of two va- 

 rieties of Lithiophilite. 176. — T. S. Hunt : The decay of rocks geologi- 

 cally considered. 190. — *E. S. Dana : Stibnite from Japan. 214. — * A. Hagde 

 and J. P. Iddings : Volcanoes of northern California, Oregon and Washing- 

 ton Territory. 222. — W. P. Blake : Cassiterite, Spodumene and Beryl in 

 the Black Hills, Dakota. 235. 



Vol. XXVI. No. 154. Oct. 1883. — J. Croll : Some controverted points 

 in geological climatology; a reply to Prof. Newcomb, Mr. Hill and others 

 249. — W. Cross and W. F. Hillebrand: Minerals of the Cryolite group 

 recently found in Colorado. 271. — W. J. McGee: Origin and Hade of 

 normal faults. 294. — C. D. Walcott: Injury sustained by the eye of a 

 trilobite at the time of the moulting of the shell. 302. — S. G. Williams: 

 Dip of the rocks in central New York. 303. 



12) Proceedings of the Academy of Natural Sciences of 

 Philadelphia. 8°. 1883. Philadelphia. [Jb. 1882. II. -438-] 

 1883. Part I. January to May. — H. Carvill Lewis: On a supposed 



human implement from the gravel at Philadelphia. 40. — Heilprin, Angelo 

 and H. Carvill Lewis : The ice of the glacial period. 46. — H. Carvill 

 Lewis : Chalcedony containing liquid. 49. — E. D. Cope : On a new extinct 

 genus of Sirenia, from South Carolina. 52; — The tritubercular type of 

 superior molar tooth. 56 ; — Permian fishes and reptiles. 69. — Heilprin, 

 Angelo and H. Carvill Lewis: Phenomena of glaciation. 69. — H. Car- 

 vill Lewis: Crystallized Serpentine from Delaware. 71. — Jos. Leidy: A 

 flint nodule from the greensand of New Jersey. 76. — E. D. Cope : On 

 the mutual relations of the Bunotherian Mammalia. 77 ; — On the charac- 

 ters.of the skull in Hadrosaurus (pl. IV — VII.). 27; — On some vertebrata 

 from the Permian of Illinois. 108. 



