Rollins, William Herbert, 1852-1929 · Boston : The University Press · leaf 728
NOTE 179 A—DETAILS OF A METHOD OF CAST-ING THE INSULATION ABOUT A SECTION OF THE SECONDARY OF THE INDEPEND-ENT INTERCHANGEABLE SECONDARY IN-DUCTION COIL Plate 138 … NOTE 179 B — FIGURE 1—AN ARRANGEMENTOF THE MULTIPLE SERIES SPARK-GAPS. AND LEYDENS OF AN INTERCHANGEABLESECONDARY INDUCTION COIL Plate 139
X-rays · Phototherapy
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