Sentence:  The whole economy of this dance consists in turning <WSD>round and round</WSD> the room in a certain measured step ; and it is truly astonishing that this continued revolution does not set all their heads swimming like a top ; but I have been positively assured that it only occasions a gentle sensation which is marvellously agreeable. 
Meaning of the word marked with <WSD> tags:  In a repeated circular motion.