Resumen de 50, 100 & 150 years ago.

• The article discusses reports from issues that were published 50, 100, and 150 years ago including one regarding kidney transplantation in identical twins in the October 1959 issue, one on the electroculture of plants in the October 1909 issue, and one on the search for the remains of Sir John Franklin in the Arctic regions in the October 1859 issue.