Haeckel
ERNST HEINRICH, a His distinguished German naturalist; born in Potsdam, Prussia, Feb. 16, 1834.
He studied natural science and medicine at Würzburg, Berlin, and Vienna under Müller, Virchow, and Kölliker. After working for a while at Naples and Messina, he became a privatdocent in the University of Jena in 1861, a professor extraordinary in 1862, and an ordinary Professor of Zoölogy in 1865. His purely scientific works have been translated into many languages. His popular books include: "On the Division of Labor in Nature and Human Life" (1869); "On the Origin and Genealogy of the Human Race" (1870); "Life in the Great Marine Animals" (1870); "The Calcareous Corals," (1873); "The System of the Medusa" (1880); "The Riddle of the Universe" (1902). A supple- Aug. 9, 1919. Life" appeared in 1910. Thoughts on (English translation) "The Miracles of mentary volume to this work called (English translation) "The Miracles of Life" appeared in 1910. Thoughts on rieties, red hæmatite and brown hæma- iron ore. There are two principal va- chiefly of peroxide of iron; a valuable Aug. 9, 1919. tite. See IRON. chiefly of peroxide of iron; a valuable iron ore. chief part of the red corpuscles of the buminoid substance which forms the There are two principal vatite. See IRON.
HÆMOGLOBIN buminoid substance which forms the chief part of the red corpuscles of the (-globin), an alblood of vertebrata. The defibrinated blood is mixed with dilute alcohol; after 24 hours the hæmoglobin separates out soluble in water, forming a red solution, which the presence of blood can be deaqueous solution of h absorption bands in its spectrum, by which the presence of blood can be dehæmoglobin in has two tected.