Medical Definition of Red blood cells. Red blood cells: The blood cells that carry oxygen. Red cells contain hemoglobin and it is the hemoglobin which permits them to transport oxygen (and carbon dioxide). Hemoglobin, aside from being a transport molecule, is a pigment. It gives the cells their red color (and their name).
Alexander Milne Calder (August 23, 1846 â June 4, 1923) was a Scottish American sculptor best known for the architectural sculpture of Philadelphia City Hall. Both his son, Alexander Stirling Calder, and grandson, Alexander Sandy Calder, became significant sculptors in the 20th century.
James Hutton was born on June 3, 1726 in Edinburgh, Scotland. James was one of five children born to William Hutton and Sarah Balfour.His father William, who was the treasurer for the City of Edinburgh, died in 1729 when James was only three years old. James also lost an older brother at a very young age.ames was one of five children born to William Hutton and Sarah Balfour. His father William, who was the treasurer for the City of Edinburgh, died in 1729 when James was only three years old.