an ..... 7 88 eve through which circulates a permanent current from a battery Aldebaran rises........... 8 02 mo. | Antares in meridlan ...... 9 50 eve. a a BOG Si is csc tevesvee 8 45 eve. | Vega in meridian ......... 0 04 mo. established at the central station. The annunciator, when Rigel rises… … Lightning Conductors and Earth Contact. complement of details. From the batteries, consisting of The importance of a perfect earth contact for lightning 850 Meidinger elements, fifty for each district line, a perma- Fig. 2.—CONTACT WHEELS AND SIGNALS. conductors is shown by an accident at…
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