DR. MAX WEBER, for many years professor of zoology in Amsterdam, doyen of late of the whole brotherhood of zoologists, died at Eerbeck on February 7, in his eighty-fifth year. He was born at Bonn on December 6, 1852, of a Dutch mother and a German father, and learned his natural history from Franz Leydig in Bonn and from Eduard von Martens in Berlin. Leydig was an excellent anatomist, who gave Weber his lifelong bent towards mammalian anatomy; von Martens, a famous conchologist, who had travelled and collected in the East, was a man of fine taste and liberal education. In 1879, Weber went to Holland, where he taught anatomy, first in Amsterdam then in Utrecht, and presently went back to Amsterdam as professor of zoology. In 1883 he took out papers of naturalization, and married Mile. Anna van Bosse, a young botanist of his own age, who proved herself the perfect wife and helpmeet.