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“When the plate was in the magnetic meridian, or in any other plane coinciding with the magnetic dip, then its rotation produced no effect upon the galvanometer.”

But, when we reflect that the ether shoots out in straight lines, and at an angle corresponding to the magnetic dip, we are at no loss to perceive the reason of this.

When the plate was in the magnetic meridian, or in any other plane coinciding with the magnetic dip, then its rotation produced no effect upon the galvanometer.

I attempted to determine the magnetic dip and intensity, but was prevented by a heavy storm of rain.

The magnetic dip is always measured in this work, according to the centesimal division, if the contrary be not expressly mentioned.