Melethallia–Gesellige Algetten from Kunstformen der Natur (1904) by Ernst Haeckel. Original from Library of Congress.… https://www.rawpixel.com/image/2272362/free-illustration-image-biology-ernst-haeckel-natureFree Image from public domain licenseAn antique lithograph of the human musculature system from the encyclopedia, Meyers Konversations Lexikon (1894). 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Digitally enhanced from our own edition of Solar Biology by Hiram Erastus Butler… https://www.rawpixel.com/image/3276593/illustration-image-art-blackFree Image from public domain licenseVintage Illustration of Whorled Solomon's seal https://www.rawpixel.com/image/502052/premium-illustration-vector-leaf-green-leaves-biologyView licenseChinese insect drawing of five butterflies, a beetle, caterpillar and a grasshopper from the 18th century. Original from The… https://www.rawpixel.com/image/2643278/free-illustration-image-butterfly-insect-vintageFree Image from public domain licenseDie Blutgefasse Des Menschen (1898), an antique lithograph of the human blood vessels and cardiovascular system. Digitally… https://www.rawpixel.com/image/431538/free-illustration-image-anatomy-heart-human-bodyFree Image from public domain licensePhaeodaria–Rohrstrahlinge from Kunstformen der Natur (1904) by Ernst Haeckel. Original from Library of Congress.… https://www.rawpixel.com/image/2272995/free-illustration-image-ernst-haeckel-seaFree Image from public domain licenseChinese insect drawing of four butterflies, a moth, praying mantis and two insects from the 18th century. Original from The… https://www.rawpixel.com/image/2643286/free-illustration-image-insect-butterfly-bugFree Image from public domain licenseDiagram no.5 print in high resolution. Digitally enhanced from our own edition of Solar Biology by Hiram Erastus Butler… https://www.rawpixel.com/image/3276611/illustration-image-art-blackFree Image from public domain licenseIllustration of a giraffe from Dictionnaire des Sciences Naturelles by Pierre Jean Francois Turpin (1840). Digitally… https://www.rawpixel.com/image/431449/giraffe-drawingFree Image from public domain licenseMycetozoa–Pilztiere from Kunstformen der Natur (1904) by Ernst Haeckel. Original from Library of Congress. 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Original from The Smithsonian… https://www.rawpixel.com/image/2643240/free-illustration-image-butterfly-dragonfly-insectFree Image from public domain licenseHuman Skeleton, Anterior View (Finished Study for Table I), (1795–1806) drawing in high resolution by George Stubbs.… https://www.rawpixel.com/image/3820049/illustration-image-art-peopleFree Image from public domain licenseAn antique illustration of the human body (1900) by Larousse, Pierre; Augé and Claude. Digitally enhanced from our… https://www.rawpixel.com/image/431529/free-illustration-image-anatomy-art-nouveau-bodyFree Image from public domain licenseHuman Figure, Lateral View (Finished study for an unpublished table, representing the last stage in the dissection)… https://www.rawpixel.com/image/3820045/illustration-image-art-peopleFree Image from public domain licensePetrological microscope with rotating stage published by C. Griffin & Co. (1893). 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