Astra Castra

Astra Castra

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Followin our imaginary particle 0 air, from the north across this calm belt of Cancer, we now feel it moving on the surface ... particle, and follow it in a round from the north ole across the equator to the south pole, and back again. (gee Diagram).

Title:Astra Castra
Author:Christopher Hatton Turnor
Publisher:London : Chapman and Hall - 1865


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