Description: Although initially skeptical about the effectiveness of the hypsometer, Secretary Joseph Henry soon recognized the value of the instrument, which he discovered from his colleagues in the scientific field.
Description: In February 1975, twenty Smithsonian scientists gathered at the National Zoo's Conservation Research Center in Front Royal, Virginia to talk about their research and the future of science at the Smithsonian.
Showing results 361 - 372 of 1411 for Rogers, David J. (David James), 1918-