scholarly journals XII. Solar eclipse of 1900, May 28.—General discussion of spectroscopic results

In the preliminary report of an expedition to the south limit of totality, in Algeria, I described in detail the methods adopted and the instruments employed in obtaining photographs of the “flash” spectrum in high solar latitudes. The present paper deals with the results obtained from a detailed study and measurement of four of the best negatives of the series of sixteen which were secured with the principal instrument, a reflecting prismatic camera.

1901 ◽  
Vol 67 (435-441) ◽  
pp. 370-385 ◽  

This expedition was one of those organised by the Joint Permanent Eclipse Committee of the Royal Society and the Royal Astronomical Society, funds being provided from a grant made by the Government Grant Committee. The following were the principal objects which I had in view in arranging the expedition:— To obtain a long series of photographs of the chromosphere and flash spectrum, including regions of the sun’s surface in mid-latitudes, and near one of the poles.


The expedition to which this report refers was one of those organised by the Joint Permanent Eclipse Committee of the Royal Society and the Royal Astronomical Society; it was supported by a grant made by the Government Grant Committee. Guelma was chosen for the site of the observations, as being an inland station between Sfax, which was selected for an expedition from the Royal Observatory, Greenwich, and Philippeville, which it was at first expected Sir Norman Lockyer would occupy. Guelma is 58 kilometres from Bona, 65 kilometres from Philippeville, 55 kilometres from the nearest coast of the Mediterranean Sea; it lies at a height of about 1200 feet above sea-level on the south side of the Valley of the Seybouze, amongst hills which range in height from about 3100 feet at 13 kilometres to the north, to about 4700 feet at 11 kilometres on the south, where lies the celebrated mountain, Mahouna, “the sleeping lady,” so called from the resemblance of its silhouette to the form of a woman. (For the position of the observing hut, see p. 59.)


1903 ◽  
Vol 71 (467-476) ◽  
pp. 228-229

In a general way the conclusions arrived at from the discussion of the spectra obtained in 1898 are amply confirmed and extended by the present results. It is now shown that every strong dark line of the solar spectrum exceeding Rowland’s intensity 7 is found in these spectra as a bright line; and the great majority of the bright lines of the flash spectrum, excluding hydrogen and helium lines, coincide with dark lines of intensity not less than 3. Most of the bright arcs of the flash spectrum are well-defined narrow lines admitting of considerable accuracy in the measures, and the present determinations of wave-length indicate that the coinci­dence of the bright lines with the dark lines is exact within ·05 t. m. for all the well-defined lines.


Author(s):  
Pavel Petrov ◽  
◽  
Nicolai Russev ◽  
Vladimir Isaev ◽  

The scientific literature has been enriched with new very interesting information about the hoards of the late 14th century found in the Republic of Moldova. The purpose of this preliminary communication is to offer for scientific discussion several types of Juchid coins found in a large treasure hoard in the south of Moldova. One type of coins is dirhams of Kilia 770/1368—1369, the second type is dirhams without indication of a mint and anonymous, with the year 1371. The article contains photos of coins, their catalog description, as well as classification. In addition, the authors offer a brief historical reference and a retrospective of the finds of treasures from the end of the 14th century on the territory of Moldova and in neighboring lands.


2002 ◽  
Vol 33 ◽  
pp. 85-123 ◽  
Author(s):  
Andrew Wilson ◽  
Paul Bennett ◽  
Ahmed Buzaian ◽  
Ted Buttrey ◽  
Kristian Göransson ◽  
...  

AbstractThe fourth season of the current project at Euesperides (Benghazi) took place in Spring 2002. Excavations continued in Areas P, Q and R, accompanied by limited augering work to determine the limits of surviving archaeology to the south of the Sidi Abeid mound. Excavations in Area P revealed part of a courtyard house from the penultimate phase of the site, with a probableandronandgunaikon. Its destruction is dated to after 261 BC. In Area Q work concentrated on the dismantling of street deposits and associated flanking houses from the later phases of the city's life; a soakaway drainage feature under the street was also investigated. The sequence of city wall circuits and their post-abandonment robbing was clarified. In Area R excavations established the structure of the mound of deposits deriving from the production of purple dye fromMurex trunculusshellfish, and its relationship to the robbed-out walls of the courtyard building within which this activity occurred. The processing of ceramic finds underlines the active trading contacts enjoyed by Euesperides, with most of the fine pottery and a fifth of the coarse pottery being imported from overseas, and transport amphorae ranging in origin from the Straits of Gibraltar to the northern Aegean. The coin finds confirm that the city was abandoned after the death of Magas (258/250 BC); and it appears that the Herakles types, common at the site, were minted there under Thibron (323–322/322 BC).


1899 ◽  
Vol 64 (402-411) ◽  
pp. 21-26 ◽  

In the month of August, 1897, I was invited by the Joint Permanenta Eclipse Committee to take part in observing the total solar eclipse which occurred in India on 22nd January of the present year. The preparation of the equipment, which will be described further on, was at once proceeded with, and by the sanction of the Univer­sity authorities and the Secretary for Scotland I was granted the necessary leave of absence from the University and the Royal Observatory.


1876 ◽  
Vol 24 (164-170) ◽  
pp. 585-592

In the following paper it is intended to give a short account of the Crustacea found at the bottom as well as on the surface of the sea during the antarctic cruise of H. M. S. ‘Challenger.’ Our expedition, as is probably well-known to most readers, left the Cape on Decem­ber 17, proceeded towards the Prince-Edward Islands, and landed on one of them. Between these islands and the Crozets, on which landing was impossible, we had several successful deep-sea dredgings. From the Crozets we sailed to Kerguelen, where we stayed nearly a month, and where a great deal of shallow-water dredging was done. Proceeding from this large island to the south, we penetrated beyond the antarctic circle, and had four successful deep-sea dredgings near the ice-barrier. On our way to Australia we were able to trawl five times. The surface animals were generally collected by the towing-net at every station by lowering the net to a depth of 50-100 fathoms, where, as experience has shown us, nearly the same quantity of animals are found during the day which at night are to be got from the very surface. In fine nights, when the ship»was gliding very slowly through the water, the net was of course always put out, and its contents were carefully preserved; but during our antarctic cruise such nights were rare, so that in most cases we had to lower the net in the daytime, during the manipulations of dredging and sounding.


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