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"An optical instrument employed to facilitate the sketching of objects from nature by producing a reflected picture of them upon paper. Wollaston's apparatus is one of the commonest. The essential part is a totally-reflecting prism with four angles, one of which is 90 degrees, the opposite one 135 degrees, and the other two each 67 degrees. One of the two faces which contain the right angle is turned towards the object to be sketched." — Winston's Encyclopedia, 1919

Camera Lucida

"An optical instrument employed to facilitate the sketching of objects from nature by producing a reflected…

Also known as Salix lucida. The branch of a Pacific Willow tree, native to wetland habitats in northern and western North America.

Branch of Pacific Willow

Also known as Salix lucida. The branch of a Pacific Willow tree, native to wetland habitats in northern…