William Saville-Kent

William Saville-Kent, an English marine biologist, was born July 10, 1845.  His early interest was in protozoa, or “infusoria,” as these organisms were called in the 19th century.  This interest was probably a result of his studying for some years with...

Samuel David Gross

Samuel David Gross, an American surgeon, was born July 8, 1805. Gross attended the brand-new Jefferson Medical College in Philadelphia in the mid-1820s, and then taught pathological anatomy for some years at the Medical College of Ohio in Cincinnati. When that school...

Thomas White

Thomas White, an English priest and natural philosopher, died July 6, 1676, at the age of about 83. White was a Roman Catholic in Anglican England, which meant he had to spend a great deal of his life in exile on the Continent, teaching in various universities and...

Harriet Brooks

Harriet Brooks, born July 2, 1876 in Exeter, Ontario, enjoyed the distinction of being the first graduate student to work with Ernest Rutherford, a giant (both physically and intellectually) of early atomic physics. They enjoyed a happy, productive period of...

Gottfried Wilhelm von Leibniz

Gottfried Wilhelm (von) Leibniz was born on July 1, 1646 in Leipzig, Germany, and was baptized into the Lutheran Church three days later. Leibniz’ father, a philosophy professor at the University of Leipzig, died when the boy was only seven, leaving him to be raised...