An author of journal and magazine articles, especially in the field of palaeontology, he was employed as a museum curator and active in American scientific societies.
His higher education progressed from work at Harvard to Johns Hopkins universities, then travelled to Munich in 1892 to complete a PhD in 1894.
[1] The New York Times noted the cause of death as presumed to be the result of overwork for the War Trade Board while recovering after the influenza outbreak known as Spanish flu, and that he had fallen into the sea fully clothed after fainting at the end of a boardwalk.
[5] Eastman's works included geology, and was employed by the New England USGS, but his interest in fossil and modern fish remained the focus throughout his career.
While in Germany he examined a collection of fossil teeth from the "Chalk Measures shark", he later translated a palaeontology text from the German language.