Convincing results in motion picture projection and additive process trichromatic photography were contemporaneous, and it was natural to ask if the two arts could not be combined. The first recorded suggestion is the British patent of Lee and Turner, two young men who were employed in my workshop in London and who with my consent patented a scheme which I disclosed to them but which I told them was of more theoretical than practical interest at that time. I considered it a great joke when their patent rights were afterwards sold for real money; but, as I predicted, the method was not practically satisfactory.