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Exportation of agricultural machinery
z68
EDWIN F. NORTHRUP.
The Weston Voltmeter (No. 7) shows a figure of merit of o . I I 5 D'Arson. In considering the meaning of this low figure, it must be remembered that a light system has to carry a pointer which must be heavy enough to be perfectly rigid. The same system, fitted with a m i r r o r would show a much higher figure of merit. The design of this instrument, as every one knows, is most scientifically worked out, and the fact that its figure of merit is low simply shows that one must exercise great caution against estimating the real worth of an instrument by this feature alone. Philadelphia, Pa.. August I6, I9IO.
Pola~ Flattening of Jupiter's First Satellite.
J. C. SOLA.
(Compt¢;~ rendus, cl, i224.) Observed with powers of 55° to 75o on the 38 cm. Mailhat equatorial at the Fabra Observatory, the satellite Io presents a conspicuous flattening which is probably greater than that of any other known body in the solar system. From the measurements it appears that the equatorial plane of Io coincides with the plane of its orbit. The flattening was approximately determined as about I: 4. Blast-Furnace Capacity in the United States. (Iron Age, lxxxvi, 8 . ) m F r o m Nov. I, I9o 7 to June 3o, I9IO, 35 blast-furnaces with a total annual capacity of 4,468,00o gross-tons were completed, and I2 furnaces, with a capacity of 287,ooo tons dismantled. This shows a net increase in capacity of 4,I8I,ooo tons. The impetus in this direction was, however, not exhausted for at that time I6 more furnaces, with a total annual capacity of 2,o83,5oo tons were in course of erection. The approximate capacity at the end of I9II is placed at 4o,228,oo0 tons. The highest level of consumption of pig-iron ever attained in the United States was during the latter part of I9o9 and early in I9IO, whenit reached a level of 31,5oo,ooo tons a year. This indicates to pig-iron consumers a comfortabIe margin of pig-iron capacity to meet the requirements of expanding trade.
t~xportation of Agricultural Machinery. (Iron Age, lxxxvi, &)--During the fiscal year ending June 3o, i9io, nearly 3o million dollags worth of machinery was exported, chiefly to Russia and Argentina. The competition is keen in Russia as Germany sold ab0uti$8,ooo,ooo worth of farm machinery in that country, and England $5,ooo,ooo worth. The value of the American machinery sent there is estimated at about $7,ooo,ooo.
EDWIN F. NORTHRUP.
The Weston Voltmeter (No. 7) shows a figure of merit of o . I I 5 D'Arson. In considering the meaning of this low figure, it must be remembered that a light system has to carry a pointer which must be heavy enough to be perfectly rigid. The same system, fitted with a m i r r o r would show a much higher figure of merit. The design of this instrument, as every one knows, is most scientifically worked out, and the fact that its figure of merit is low simply shows that one must exercise great caution against estimating the real worth of an instrument by this feature alone. Philadelphia, Pa.. August I6, I9IO.
Pola~ Flattening of Jupiter's First Satellite.
J. C. SOLA.
(Compt¢;~ rendus, cl, i224.) Observed with powers of 55° to 75o on the 38 cm. Mailhat equatorial at the Fabra Observatory, the satellite Io presents a conspicuous flattening which is probably greater than that of any other known body in the solar system. From the measurements it appears that the equatorial plane of Io coincides with the plane of its orbit. The flattening was approximately determined as about I: 4. Blast-Furnace Capacity in the United States. (Iron Age, lxxxvi, 8 . ) m F r o m Nov. I, I9o 7 to June 3o, I9IO, 35 blast-furnaces with a total annual capacity of 4,468,00o gross-tons were completed, and I2 furnaces, with a capacity of 287,ooo tons dismantled. This shows a net increase in capacity of 4,I8I,ooo tons. The impetus in this direction was, however, not exhausted for at that time I6 more furnaces, with a total annual capacity of 2,o83,5oo tons were in course of erection. The approximate capacity at the end of I9II is placed at 4o,228,oo0 tons. The highest level of consumption of pig-iron ever attained in the United States was during the latter part of I9o9 and early in I9IO, whenit reached a level of 31,5oo,ooo tons a year. This indicates to pig-iron consumers a comfortabIe margin of pig-iron capacity to meet the requirements of expanding trade.
t~xportation of Agricultural Machinery. (Iron Age, lxxxvi, &)--During the fiscal year ending June 3o, i9io, nearly 3o million dollags worth of machinery was exported, chiefly to Russia and Argentina. The competition is keen in Russia as Germany sold ab0uti$8,ooo,ooo worth of farm machinery in that country, and England $5,ooo,ooo worth. The value of the American machinery sent there is estimated at about $7,ooo,ooo.