. Bulletin. Science. Figure 38.—One of the first forms of the AlUance machine. Note the brushlike cur- rent collectors. Reproduced, with permission of the publisher, from O. Mahr, Die Entstehung der Dynamomaschine (vol. 5 of Geschichtliche Einzeldarstellungen am der Elektrotechnik, Berlin, J. Springer, 1941), p. 89, fig. 61. tests were held at South Foreland during the winter of 1876-1877 under the joint supervision of Professor Tyndall, successor to Faraday as scientific adviser to Trinity House, and James N. , chief engineer of Trinity House. The results of these tests (see table 1)

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. Bulletin. Science. Figure 38.—One of the first forms of the AlUance machine. Note the brushlike cur- rent collectors. Reproduced, with permission of the publisher, from O. Mahr, Die Entstehung der Dynamomaschine (vol. 5 of Geschichtliche Einzeldarstellungen am der Elektrotechnik, Berlin, J. Springer, 1941), p. 89, fig. 61. tests were held at South Foreland during the winter of 1876-1877 under the joint supervision of Professor Tyndall, successor to Faraday as scientific adviser to Trinity House, and James N. , chief engineer of Trinity House. The results of these tests (see table 1) showed the new dynamo to be far superior to the magneto generator.'- Of the two dynamos, the Siemens ta ;i — ~ fp'!-!^ —] d'dE m'- t^. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution; United States. Dept. of the Interior; United States National Museum. Washington, Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off

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Keywords: ., bookauthorunitedstatesdepto, bookcentury1900, booksubjectscience