Professor Mercovitch gave an exhibition of the projectoscope in Institution of Engineers and Shipbuilders, on Praya Central, last night. The rendition of a quartette entitled 'High Old Time,' exhibition of boxing, umbrella dance and 'Children's Toilet' caused amusement.…

A new machine, Vanoscope, invented by Lewis C. Van Riper and exhibited by W. J. Robinson, manager of the Vanoscope Company, will replace the flicker from pictures projected upon the normal screen. It is not as tiresome to the eyes and can eliminate the danger of fire. The exhibitors displayed a…