xxxii Proceedings of Royal Society of Edinburgh. 
104. “ Chain Pendulum,” 1887. 
105. Instability in Open Structures.” 1887. 
106. “ Eclipse of the Moon.” 1888. 
107. “ On Leslie’s Computation of.” 1888. 
108. “ Compensation Balance.” 1888. 
109. “ Compound Goniometer.” 1889. 
110. “ Air’s Resistance.” 1889. 
111. “ Curves of Vibrations of Straight Wires.” 1889. 
112. “ Extension of Brouncker’s Method. ” 1889. 
