Revolving fluid in the atmosphere

In the ‘Proceedings’ of this Society (Series A, vol. 94, No. A 656, November, 1917), there appears a paper under the above title by Sir Napier Shaw. In that paper reference is made to my experiments on cyclonic motion. As no objections are offered to any of the points raised by me, there does not seem to be any necessity for my making a reply, unless it be that, having used the language of cyclonic and anticyclonie circulation, I am called upon to support that theory, or to acknowledge that Sir Napier Shaw’s holds the field. Before accepting this new theory, one naturally enquires as to the foundations on which it is built; but first we had better to try to understand why the writer of the paper is dissatisfied with the cyclonic theory. He tells us that we have not been interpreting correctly the charts of winds and isobars formerly issued by the Meteorological Office, and says that, “if the motion of the air in a cyclone had really been motion of a revolving fluid symmetrical with regard to a vertical axis it would not have appeared in circular form on the mapconsequently the appearance of uniform and symmetrical instantaneous motion in a cyclone is in itself proof that we have not in that case symmetrical motion about a centre of a mass which travels as a whole.”