Following achievements (contd.)
		• The great advantage of Talbot's method was that the process involved both a negative and a positive. The negative image, the calotype, was repeatable indefinitely in a positive print, finally allowing multiple prints. • By 1880, a convenient “dry plate” process was developed, allowing very fast development and opening the field to the general public.
	Xie Kitchin with Umbrella, Lewis Carroll, 1875