...We found on investigation that a spark gave out a lightwhich was peculiarly rich in ultra-violet rays when it was passedbetween magnesium points... 
Victor Rousseau 「Astounding Stories of Super-Science January 1930」
...The vapour of iron is there, the vapour of sodium, magnesium, andso on...
Richard A. Proctor 「Myths and Marvels of Astronomy」
...Into the prominencesthere are thrown from time to time masses of glowing sodium, magnesium,and (in less degree) iron and other metallic vapours...
Richard A. Proctor 「Myths and Marvels of Astronomy」
...The vapours of iron, sodium, magnesium, and other metals, areindicated as existing in small quantities...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...We may mention calcium, iron, hydrogen, sodium,carbon, nickel, magnesium, cobalt, aluminium, chromium, strontium,manganese, copper, zinc, cadmium, silver, tin, lead, potassium...
Robert Stawell Ball 「The Story of the Heavens」
...It is, however, to benoted that calcium and one other element are also invariably present,while iron, manganese and magnesium are often apparent...
Robert Stawell Ball 「The Story of the Heavens」
...Hydrogen is the principal material of its upper part;iron, magnesium, and othermetals, some of them as yet unknown on earth, but having a recordin the spectrum, in the denser parts below...
Henry Warren 「Recreations in Astronomy」
...—Aldebaran (Frontispiece)shows salt, magnesium, hydrogen, calcium, iron, bismuth, tellurium,antimony, and mercury...
Henry Warren 「Recreations in Astronomy」
...Occasionally, too, the magnesium in the solaratmosphere (over certain limited regions only, be it remembered) hasbeen known to behave in this manner...
Richard A. Proctor 「Myths and Marvels of Astronomy」
...The three metals, strontium, sodium, and magnesium, may thus beidentified by the colours they produce when incandescent...
Robert Stawell Ball 「The Story of the Heavens」
...b the hydrogen lines and the few metallic lines are of equal breadth,and the magnesium line just mentioned is the strongest of all...
Robert Stawell Ball 「The Story of the Heavens」
...The hydrogen lineswere very conspicuous, while the iron lines were very numerous, andcalcium and magnesium were also represented...
Robert Stawell Ball 「The Story of the Heavens」
...It appears that there is decisive evidenceof the presence in this luminary of many elements known to exist in ourown sun; amongst others are found sodium, magnesium, calcium, iron, andbismuth...
Richard A. Proctor 「Half-hours with the Telescope」
...Thelines marked C and F are produced by hydrogen, which isone of the constituents of water, E shows calcium to bepresent in the sun, b magnesium, etc...
George C. Comstock 「A Text-Book of Astronomy」
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