1. A letter from the Rev. Dr. Samuel Clarke to Mr. Benjamin Hoadly, F.S.R. occasion'd by the present controversy among mathematicians, concerning the proportion of velocity and force in bodies in motion;Clarke;Philosophical transactions,1728
2. Pemberton , op. cit. (85), p. 34.
3. Desaguliers , ‘An account of some experiments…’, op. cit. (81), 269–71.