Chemistry and Physics-Conversion of the black to the red mercuric sulphide, W. SPRING, 342.-Color, density and surface tension of hydrogen peroxide, W. SPRING, 343.-Indirect Electrolysis of a liquid, E. ANDREOLI: Constituents of Cleveite gas, C. RUNGE and F. PASCHEN, 344. Geology and Mineralogy—Glacial lakes in the Genesee valley, H. L. FAIRCHILD, 345.-Supplementary Notes on the Metamorphic Series of the Shasta Region of California, J. P. SMITH: Ornithichnites and jaw bone from the Newark sand stone of New Jersey, A. M. EDWARDS, 346.-Missouri Geological Survey— Lead and Zinc Deposits, A. WINSLOW: Geological Survey of Canada, 347.— Geological Society of America: La Géologie comparée, S. MEUNIER: Eruptiv- gesteine des Kristianiagebietes: I Die Gesteine der Grorudit-Tinguait Serie, W. C. BRÖGGER, 348.-Directions for collecting rock specimens, 349.-Prelim- inary Report on the Marbles of Georgia, S. W. MCCALLIE: Some Swedish minerals, HJ. SJÖGREN, 350.-Ueber gewundene Bergkrystalle, G. TSCHERMAK, Number 299. ART. XXXVII.-Wave Length of the D, Helium Line; by XLIII. Reduction of Selenic Acid by Hydrochloric Acid; Page 357 359 377 387 390 394 400 in Acid Solution; by F. A. GooсH and W. S. SCOVILLE 402 XLV.-Reptilia of the Baptanodon Beds; by O. C. MARSH 405 XLVI.-Restoration of Some European Dinosaurs, with Suggestions as to their Place among the Reptilia; by SCIENTIFIC INTELLIGENCE. 407 Chemistry and Physics-Refractivity and viscosity of Argon and Helium, LORD RAYLEIGH: Compound nature of the gas from Cleveite, C. RUNGE and F. PASCHEN, 413.-Specific refraction of Argon, 41€.-Color Photography, 0. WIENER. 417.-Electric Aureole: and Stratifications in the Electric arc and in discharges in rarified gases, LEHMANN: Magnetism of Asbestos, BLEEKRODE: Electric refraction of Liquids, P. DRUDE: Double refraction of electric waves in ice, V. BIERNACKI, 418.-Double refraction of electric waves, P. LEBEDEW, 419. Geology and Mineralogy-Temperature Variation of the Thermal Conductivity of Rocks, LORD KELVIN and J. R. E. MURRAY, 419.-United States Geological Survey: 14th Annual Report for 1892-93, 423.-Gold fields of the Southern Appalachians, G. F. BECKER: Columnar sandstone, J. M. CURRAN: Petrology for Students, A. HARKER, 425.-Introduction to the study of Rocks, L. FLETCHER: Calaverite from Cripple Creek, Col., W. F. HILLEBRAND: Minerals from New South Wales, A. LIVERSIDGE, 426.-Contribution to the Mineralogy of Wisconsin, W. H. HOBBS: Tabellarische Uebersicht der einfachen Formen der 32 krystallographischen Symmetriegruppen, Dr. E. A. WÜLFING: Mineral Industry, its Statistics, Technology, and Trade in the United States and other countries to the end of 1894: Field Columbian Museum, Handbook and Catalogue of the Meteorite Collection, O. C. FARRINGTON, 427. Botany--Synoptical Flora of North America, vol. I, A. GRAY, S. WATSON, B. L. ROBINSON, 428.-Another example of Chalazogamy, Dr. S. NAWASCHIN, 429. Miscellaneous Scientific Intelligence-Meeting of the British Association, 429.— Origin of Thunderstorms, 430.-Uniformity of size of pages of Scientific Societies Publications: Map of the wooded area of Connecticut: Principles and Practice of Agricultural Analysis, H. W. WILEY, 431. Obituary-Professor CHARLES V. RILEY, 432.-M. LOUIS PASTEUR: Professor ELI WHITNEY BLAKE: Dr. ALBERT E. FOOTE, 434. Number 300. ART. XLVII.-Temperature Variation of the Thermal Con- Page 435 gence; by E. H. MUDGE 442 XLIX.-Devices for the Separation of Minerals of high specific gravity; by S. L. Penfield 446 L.-How to find the Key Note of Auditoriums; by E. 449 LI. Stratigraphy of the Kansas Coal Measures; by E. 452 LII.-Igneous Rocks of Yogo Peak, Montana; by W. H. 467 LIII.-Preliminary Note on a new Alkali Mineral; by W. 480 LIV.-Three-toed Dinosaur tracks in the Newark Group at 481 483 SCIENTIFIC INTELLIGENCE. Chemistry and Physics-Method for completely dehydrating Alcohol, H. WISLICENUS and L. KAUFMANN: Carbon in Meteoric Irons, MOISSAN: Study of Amorphous Boron, MOISSAN, 499.-Preparation of Tin Tetrachloride and Tetrabromide, LORENZ, 500.-Argon and Helium, BOUCHARD: Photography of Colors by the indirect method, A. and K. LUMIÈRE: Spectrum of Carbon of the electric Oven, DESLANDRES, 501.-Measurement of high Temperatures, L. HOLBORN and W. WIEN, 502.-Absorption of Kathode rays, P. LENARD and O. LEHMANN, 503. Geology and Mineralogy-Underground temperatures at great depths, A. AGASSIZ, 503.-Geological Atlas of the United States, 504.-Economic and Geologic Map of New York State, F. J. H. MERRILL, 505.-Lakes of North America, I. C. RUSSELL: Phonolitic Rocks from Montana, W. H. WEED, 506.-Crystallography: A Treatise on the Morphology of Crystals, N. STORY-MASKELYNE, 507. Botany-Sixth Annual Report Missouri Botanical Garden, 507.—Index Kewensis, 508. Miscellaneous Scientific Intelligence-Le Pétrole, L'Asphalte et le Bitume au point de vue géologique, A. JACCARD: Les Aurores polaires, A. ANGOT: Une Excursion en Corse, PRINCE R. BONAPARTE, 509. INDEX TO VOLUME L, 510. Ten-Volume Index, Vols. XLI-L, ready in January, price seventy-five cents. THE AMERICAN JOURNAL OF SCIENCE [THIRD SERIES.] Erratum for the June number. Attention is called to a serious error in the June number, which escaped notice in reading proofs. On page 475 in the title of the 3d article, Illinois is twice misused in place of Missouri. It should read Geological Survey of Missouri, vol. iv, Paleontology of Missouri, etc. Also in the Index, p. 487, under Geological Reports and Surveys, the third entry should be Missouri, not Illinois; and on p. 489, the first line should read, Keyes, C. R., Paleontology of Missouri, not Illinois. nate in northern Ohio is such as to indicate that the eastern portion of the Lake Erie basin was still occupied by the ice sheet while the western portion was occupied by the lake which formed these beaches. At the time that paper was prepared the glacial features of western New York (where Mr. Gilbert had discovered that two lower beaches terminate) had not received attention, and it was not until the autumn of 1893 that opportunity was afforded to examine these features. The examination of these features was not premeditated, otherwise it would have been more thorough and would have been preceded by a fuller understanding of Mr. Gilbert's results. It was taken up in connection with a study of the moraines bordering the re-entrant angle in the glacial boundary in southwestern New York. When that study was entered upon it was planned to examine only the southern border of the * This Journal, April, 1892, pp. 281-301. AM. JOUR. SCI.-THIRD SERIES, VOL. L, No. 295.-JULY, 1895. glaciated district, but the morainic complications are such that it was found necessary to work northward nearly to the border of the old lake. After the completion of the main line of investigation a few days were spent in the study of the features in the vicinity of the termini of the beaches, but the approach of winter prevented its satisfactory completion. The phenomena prove to be complicated and in some ways obscure, but it is thought that fuller study of certain features may clear up the difficulties. It will be observed that an untouched field remains at the eastern terminus of the upper (Sheridan) beach, a field which is likely to yield definite results when given proper attention. This and other defects do not leave in doubt the main question of the correlation of the beaches with the moraines. That the beaches are absent because of the presence of the ice-sheet at that time, in the region to the east of their eastern termini, is made clear by the position of the moraines and their features near the termini of the beaches. Inasmuch as opportunity for completing the study is not at present open, it seems advisable to set forth the situation so far as now understood. Mr. Gilbert spent considerable time, in 1886, in the study of the beaches here discussed. He has delayed publication in the hope of having opportunity to round out the subject. But as there is no immediate prospect for doing so, he has kindly furnished from his unpublished notes some of the data here presented. I wish also to acknowledge indebtedness to Mr. Gilbert for a careful revision of this paper, as well as for guidance in field observations. A word seems necessary concerning the introduction of names for the beaches here discussed. They are the names chosen by Mr. Gilbert about the time he made the study referred to and are the names of towns situated on the beaches. It seems probable that the Sheridan beach constitutes the continuation of the Belmore, but until this matter is fully settled it is considered advisable to use a separate name. The Crittenden beach is perhaps the same beach which, on the Canadian shore, Dr. Spencer has called the Forest, but as yet these observers have not made sufficiently close connection to render the correlation entirely certain. It seems best, therefore, for the present to employ both names. The Sheridan Beach.-The upper of the two raised beaches which border the Lake Erie basin eastward from Cleveland has been traced by Mr. Gilbert to Sheridan, New York, a village about 30 miles southwest from Buffalo. (See Map, Fig. 1.) It is thought by him that the beach may extend to the vicinity of Hamburg, immediately south from Buffalo, but he expresses *This Journal, vol. xli, 1891, pp. 203-204. |