Research Friday: Hydrozoa According to Ernst Heinrich Haeckel - Irenebrination: Notes on Architecture, Art, Fashion, Fashion Law & Technology
![Professor Ernst Heinrich Haeckel, 1834 - 1919, German zoologist, philosopher and free thinker, historical illustration, 1877 Stock Photo - Alamy Professor Ernst Heinrich Haeckel, 1834 - 1919, German zoologist, philosopher and free thinker, historical illustration, 1877 Stock Photo - Alamy](https://c8.alamy.com/comp/C24KKT/professor-ernst-heinrich-haeckel-1834-1919-german-zoologist-philosopher-C24KKT.jpg)
Professor Ernst Heinrich Haeckel, 1834 - 1919, German zoologist, philosopher and free thinker, historical illustration, 1877 Stock Photo - Alamy
![File:Ernst Heinrich Philipp August Haeckel. Photogravure after F. Wellcome V0026497.jpg - Wikimedia Commons File:Ernst Heinrich Philipp August Haeckel. Photogravure after F. Wellcome V0026497.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/4/43/Ernst_Heinrich_Philipp_August_Haeckel._Photogravure_after_F._Wellcome_V0026497.jpg)
File:Ernst Heinrich Philipp August Haeckel. Photogravure after F. Wellcome V0026497.jpg - Wikimedia Commons
![Ernst Haeckel's Sublime Drawings of Flora and Fauna: The Beautiful Scientific Drawings That Influenced Europe's Art Nouveau Movement (1889) | Open Culture Ernst Haeckel's Sublime Drawings of Flora and Fauna: The Beautiful Scientific Drawings That Influenced Europe's Art Nouveau Movement (1889) | Open Culture](https://cdn8.openculture.com/2017/11/28230652/714px-Haeckel_Discomedusae_8.jpg)