CANNON, ANNIE JUMP (1863— ), American astron omer, was born at Dover, Del., on Dec. II, 1863. She gradu ated at Wellesley college in 1884, and did special work in astron omy at Radcliffe college. She was an assistant at the Harvard college observatory, 1896-1911, and after 1911 the curator of astronomical photographs there. In the course of her photo graphic work she discovered 30o variable stars, five new stars, one spectroscopic binary and completed a catalogue of 225,000 stellar spectra which fill nine quarto volumes of the annals, all of which are now published. She compiled a bibliography of variable stars comprising about 75,00o references and undertook the classifica tion of faint stars in certain portions of the Milky Way. She is the author of various Annals of the Harvard College Observatory.