ARNOLD FREDERIK HOLLEMAN A. F. Holleman, Nestor of the Dutch chemists, was born on August 28,1859, a t Olsterw k, Netherlands. Trained a t Leiden, Heidelberg, and Munich, was appointed asszstant to van't Hoff a t Amsterdam in 1887. His talents were soon shown to be worthy of more responsibility, and in 1889 Holleman went to Groningen as director of the agricultural laboratory. Another advancement was not long in coming and in 1893 he was made professor of chemistry in the University of Groningen and Glled this post with such distinction that in 1905 he was called to Amsterdam as professor of organic chemistry. He retired from active teaching in 1924.
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Of his numerous contributions to chemical literature, the first rank is taken by his studies of substitution in the benzene ring, and he collected his authoritative knowledge of this important subject in his well-known volume: "Die Einfiihrung von Substituenten in den Benzolkern." Honors have come to him not only in his own country, but also from the Institut de France (corresponding member), St. Andrews, Leeds (honorary doctorates), etc. Chemical students throughout theworldknow hisname,forHolleman's teatsof both inorganic and organic chemistry have passed through many editions in nine languages. (Contributed bbyRalph B. Ocspcr.)
