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Hazel branch [(Corylus avellana)]
(Printed by W. Rawlins for the author, 1682)
A page cut transversely from the book "The anatomy of plants: With an idea of a philosophical history of plants. And several other lectures, read before the Royal Society."
Cell from Proterallium, 1926
The camera lucida is an optical device patented in 1806 as a drawing aid by artists and scientists. Through a combination of a prism and half-silvered mirror, the artist sees the subject being viewed superimposed on the ...