IN connection with the celebration this week of the one hundred and fiftieth anniversary of the Royal Academy of Belgium a volume has been prepared recording the varied activities of the Academy since its foundation in 1772.1 Each section of the volume has been allotted to a specialist. M. Paul Pelseneer, the Permanent Secretary, contributes a luminous general introduction and a history of the Prize Founda tions of the Institution. M. Stroobant contributes the mathematical and physical section; Prof. Massart writes on the biological sciences and M. Fourmarier on the mineral sciences. The historical sciences have been undertaken by Prof. Pirenne, the philological sciences by Prof. Thomas, the juridical sciences by M. Cornil, the philosophical sciences by Prof. Leclere, the economic sciences by Prof. Mahaim. M. Lucien Solvay and M. Paul Bergmans deal with painting, sculpture, engraving, and architecture.