A general philosophical instrument of universal application The theory: David Brewster, A Treatise on the Kaleidoscope, Edinburgh, 1819. https://archive.org/details/b29295440/mode/2up The actuality in advance of the theory: Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Share on Tumblr (Opens in new window) Tumblr Email a link to a friend (Opens in new window) Email Print (Opens in new window) Print Share on WhatsApp (Opens in new window) WhatsApp Like this:Like Loading…
