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: This technical piece from the book Mechanical Drawing Self-Taught (page 179) illustrates a cone with a pipe intersection , demonstrating 19th-century engineering draftsmanship.

: A detailed painting of a black bird , originally from Zoological Illustrations Volume III, Plate 179 . Historical and Cultural Artifacts 179.jpg

: Featured in L'Illustration horticole , this piece is a detailed scientific plate of an Agave plant , typically used in historical botanical studies. : This technical piece from the book Mechanical

: A high-resolution photograph of the Imperial Cross of the Holy Roman Empire , housed in the Weltliche Schatzkammer Wien . originally from Zoological Illustrations Volume III