And this yellow figure of Victory will give a purple spectre.
The face of this figure will come out green in the spectre, the garment red, and the cloud white.
This black skeleton will make a white spectre.
This skeleton will also give a white spectre, with a yellow mantle.
This figure and broom will give a yellow spectre, cloak and hat red, and moon white.
These figures will give green and yellow spectres.
This Cupid will give a rose-coloured spectre, with bow and arrow yellow.
This is a rainbow with colours reversed, the spectre of which will be found a good resemblance of nature, especially when seen on a cloudy sky.
The colours of the spectres produced by these figures will not only be subject to a slight variation in different eyes, but also by the degree in which the plates are illuminated while being looked at.
All the spectres will appear life-sized if the observer is about sixteen feet from the surface against which they are seen. If much further, they will appear colossal.