CONTENTS OF VOLUME XXXIV. 



Number 199. 



Page. 



Art. I. — The Viscosity of Steel and its Relations to Temper- 

 ature ; by Carl Barus ' 1 



II. — Kilauea in 1880; by William T. Brigham 19 



III. — Recent Explorations in the Wappinger Valley Lime- 

 stone of Dutchess County, 1ST. T. ; by W. B. Dwight .. 27 



IV. — Image Transference; by M. Cart Lea, Philadelphia . 33 



V. — Notes on the Lower Carboniferous groups along the 

 easterly side of the Appalachian area in Pennsylvania 

 and the Virginias ; by John J. Stevenson 37 



VI. — The Theory of the Wind Vane ; by George E. Curtis 44 



VII. — On the manner of Deposit of the Glacial Drift ; by 



0. P. Hat 52 



VIII. — A New Photographic Spectroscope; by C. C. 



Hutchins 58 



IX. — A new Meteoric Iron and an Iron of doubtful nature; 



by R. B. Riggs ._: 59 



X. — On an Aerolite from Rensselaer County, New York; by 



S. C. H. Bailet ; 60 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics. — On the Boiliug point of liquefied Ozone, Olszewsky, 

 62. — -On the Absorption-spectra of liquid Oxygen and of liquefied Air, Olszew- 

 sky, 63. — On the action of Platinum on a mixture of Oxygen and Ammonia 

 gases, Kraut : On two new Hydrates of Potassium Hydroxide, 64. — On the 

 Sugar yielded by Hesperidin and Naringin, Will : On the Thermo-chemistry 

 of Antimonious sulphide, Bertrelot, 65. — On a new Color reaction for Bis- 

 muth, Hazelbroek : A new Heat Measurer, 66. — Color mixtures : Dispersion 

 of rock salt : Effect of pressure on thermometer bulbs : On an objection to 

 Professor Morley's Attempt to explain the less amount. of Oxygen in the Air 

 observed by him in the region of an Anti-cyclone, Max Schumann, 67. 



Geology and Mineralogy. — On a Seismic Survey made in Tokio.in 1884-85, 68. 

 — On Submarine Valleys on the Pacific Coast of the United States, George 

 Davidson, 69. — Triassic Mammals, Dromatherium and Microconodon : Artesian 

 well at St. Augustine, Florida: Formation of the cone in the Halema'uma'u, 

 70. — Report ou the Geology of New Jersey for 1886, G. H. Cook: Bulletin of 

 the Scientific Laboratory of Denison University, C. L. Herrick, 71 : A sketch 

 of the Geological Development of the Pacific Slope, G. F. Becker: First Report 

 on the Florida State Geological Survey, 1887. J. Kost: Brief notices of some 

 recently described minerals, 72. — Uraninite and monazite from Canada, G. C. 

 Hoffmann, 73. 



Botany and Zoology. — Die natiirlichen PflanzenfamilienJ nebst ihren Gattungen 

 und wichtigeren Arten, insbesondere den Nutzpflanzen bearbeitet, unter Mit- 

 wirkung zahlreicher hervorragender Fachgelehrten, von A. Engel und K. 

 Prantl, 74. — An introduction to the Study of Lichens, Henry Willey : The 

 West Indian Seal (Moiiachus tropiculis), 75. — Selected Morphological Mono- 

 graphs, 76. 



