Transactions and Proceedings and Report of the Philosophical Society of Adelaide, South Australia, Volumes 9-11

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The Society, 1887
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Page 22 - ... inch in diameter, with a groove or channel round it, whose middle is about 0'34 inch below the top of the cylinder, for insertion of the points of the ivory fork by which it is to be lifted ; the edges are carefully rounded off, and such standard pound is marked, PS 1844, 1 Ib.
Page 22 - ... near to each end a cylindrical hole is sunk (the distance between the centres of the two holes being thirty-six inches) to the depth of half an inch, at the bottom of this hole is inserted in a smaller hole a gold plug or pin, about...
Page 17 - A few days ago, through the kindness of Mr. A. Molineux, of Adelaide, a small mole-like animal, which appears to be new to science, was forwarded to the South Australian Museum. It was found on the Idracowie Cattle Station at a distance, I understand, of about 100 miles from the Charlotte Waters Telegraph Station, on the overland line from Adelaide to Port Darwin, but the exact circumstances of its capture are not yet to hand. The collector, however, reports that it must be of rare occurrence, as...
Page 16 - Boracic acid is also easily soluble in water, so that the gold spheres can be separated without loss of time. The following rules and figures may be useful to anyone wishing to adopt the system here described : — 1. The weight of a sphere increases as the cube of the diameter. 2. The weight of a sphere of any substance of which the specific gravity is known is obtained by multiplying the weight of a unit sphere of water by the specific gravity of the substance and the cube of the diameter. Constants...
Page 15 - ... last drop of water and the gold with a glass rod on to the plate; the water is drawn off by a piece of filter paper and the plate gently heated till dry. Having thus obtained the gold in a pure state, a bead is made of boracic acid on a platinum wire loop and pressed on the gold while still red-hot; the gold adheres without difficulty, and by heating the bead before the blowpipe the gold is obtained as an almost perfect sphere. Should the resulting sphere of gold be very minute it is better to...
Page 33 - Water weighed in Air at the Temperature of Sixty-two Degrees of Fahrenheit's Thermometer, the Barometer being at Thirty Inches...
Page 22 - ... of the imperial standard yard is given by the interval between the middle transversal line at one end and the middle transversal line at the other end, the part of each line which is employed being the point midway between the longitudinal lines; and the said points are in this Act referred to as the centres of the said gold plugs or pins ; and such bar is marked " copper 16 oz., tin 2|, zinc 1.
Page 233 - Boletín de la Academia Nacional de Ciencias en Córdoba (República Argentina) ; tomo X.
Page 27 - ... its specific gravity and expansion not being known. And, he adds, that it is to be hoped that no pound will in future be declared a legal standard unless these elements (the knowledge of which is indispensable even for a single comparison with a good balance) are previously determined with the greatest possible precision.
Page 22 - Length is given by the Interval between the Middle transversal Line at one End and the Middle transversal Line at the other End, the Part of each Line which is employed being the Point Midway between the longitudinal Lines; and the said Points are...

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