(Table 1) Helium concentration in sediments

Two decades ago, Merrihue (1964) reported 3He/4He ratios of >10**-4 in ferromagnetic separates from a Pacific deep ocean red clay and concluded that the high ratio is due to extraterrestrial debris amounting to ~1% of the sediment. A decade later Krylov et al. (1973) compiled 3He/4He isotopic data on ocean sediments measured in the Soviet Union and observed that the 3He/4He ratio is generally higher in pelagic sediments where the sedimentation rate is lower. They suggested that the high 3He/4He ratio was attributable to extraterrestrial materials which were concentrated in slowly accumulating ocean floor. However, these important discoveries were almost completely neglected until we re-examined the problem. We have measured 39 sediments from 12 different sites, 10 sites from the western to central Pacific and two sites from the Atlantic Ocean. We find 3He/4He ratios >5 * 10**-5 for six sites, well above the values generally observed in common terrestrial materials. The very high 3He/4He ratio in the sediments is probably due to input of extraterrestrial materials. Input of stratospheric dust of <1 p.p.m., which corresponds to a fallout rate of ~2,000 tons per year, can explain the observation.

Geschichte der geographie und der geographischen entdeckungen, in verbindung mit ... der geschichte der schiffahrt, der kolonien und des handels, von der ältesten bis auf die neueste zeit ...

Mode of access: Internet.

[Works]

[v. 26-27] Salmagundi; or the whimwhams and opinions of Launcelot Langstaff, esg., and others, by William Irving, James Kirke Paulding, and Washington Irving.--Letters of Jonathan Oldstyle, gent.--Biographical sketches. [c1897]--[v.28-29] The sketch-book of Geoffrey Crayon, gent. [c1894]--[v. 30] Spanish papers. [c1895]--[v. 31-32] Tales of a traveller. [c1895]--[v.33-40] Life of George Washington. [c1857]

Vikings of the Pacific; the adventures of the explorers who came from the West, eastward; Bering, the Dane; the outlaw hunters of Russia; Benyowsky, the Polish pirate; Cook and Vancouver, the English navigators; Gray of Boston, the discoverer of the Columbia; Drake, Ledyard, and other soldiers of fortune on the west coast of America.

"The contents of this volume appeared serially in Leslie's monthly, Outing, and Harper's magazine." - Foreword.

Histoire des découvertes et des voyages faits dans le Nord /

Este registro bibliográfico corresponde a la edición francesa, publicada en dos volúmenes, de la obra del naturalista : Forster, Johann Reinhold : "Geschichte der Entdeckungen und Schiffahrten im Norden..." publicado en su primera edición en: Frankfurt an der Odre : C. G. Strauss, 1784. La edición inglesa es de: London: printed for G. G. J. and J. Robinson, 1786 y lleva por título: "History of the voyages and discoveries made in the North...".

The American gazetteer : exhibiting a full account of the civil divisions, rivers, harbours, Indian tribes, [et]c. of the American continent, also of the West India and other appendant islands : with a particular description of Louisiana /

Sabin,

Biblioteca maritime española, obra póstuma ...

Bio-bibliographical notes of Spanish authors, explorers, soldiers, etc., arranged alphabetically by forenames.

Narrative of a second expedition to the shores of The Polar Sea in the years 1825, 1826, and 1827 /

Mode of access: Internet.

Benin to Bahia;

Mode of access: Internet.

Recent research in Bible lands, its progress and results ...

Oriental research and the Bible, by J. F. McCurdy.--The mounds of Palestine, by F. J. Bliss.--Explorations in Babylonia, by H. V. Hilprecht.--Research in Egypt, by A. H. Sayce.--Discoveries and researches in Arabia, by F. Hommel.--The Hittites, by W. H. Ward.--Early Greek manuscripts from Egypt, by J. P. Mahaffy.--New light on the Book of Acts, by W. M. Ramsay.--Indexes.

The garden of Eden and the flood.

Attempts to locate the garden of Eden in North America, on the strength of the fossil discoveries in the "Ashley beds" of South Carolina.

Tilton's journal of horticulture.

Mode of access: Internet.

Special volume of the proceedings of the Geographical Society of Australasia : with maps and illustrations /

Mode of access: Internet.

Proceedings of the California Academy of Sciences at a reception given to the captain and officers of the Jeannett Search Expedition when about to sail from this port in the United States exploring and relief steamer Rodgers, Lieutenant Robert M. Berry, U.S. Navy, commanding; including papers read, with the discussion thereon, before the Academy at its regular meeting held June 6th, 1881.

The papers include Early discoveries of Wrangel land; The object of Arctic explorations, by C.W. Brooks: Description of the Rodgers; The telegraph in Arctic regions, by James Gamble.

Essays and essay-writing, based on Atlantic monthly models,

"Made up almost entirely of short, familiar essays published anonymously in the 'Contributors' club' of the Atlantic."--Pref.