'Animadversiones in novam Theoriam Motus' of Christopher Wren and Christian Huygens Criticisms about the new theory of motion by Christopher Wren and Christian Huygens Presented to the Royal Society on 10 June 1669 At end a note reads: 'This being read at the Society, Dr Wren declared, that what the Author of these Animadversions esteemed for a Paradox, he judge to be a Truth, and had, before this, considered as a Corollary naturally following from the Rules. The President said, that the General Cases of Motion, being but three, were in short made out thus'. Brouncker's theory of motion follows this. 1669