Sir Arthur Röcker, F.R.S.

Association, Archreological Institute of America, and the American Genetic Association. Many excursions to points of scientific interest on the Pacific Coast were given. About six hundred members were in attendance. All the arrangements for the meetings were in the hands of the newly-organised Pacific Coast division of the American Association, which prepared a source book of information upon the natural aspects of the Pacific Coast and upon the develop-

S_everal interesting and rather important symposia were held, notably one on the physics of the air, under the auspices of Section B and the American Physical Society; three on the correlation of the Triassic, the Cretaceous, and the Miocene, under the auspices of the Paleontological Society of America ; and one by the American Society of Zoologists on the r6le of variation and heredity in evolution.

An important series of papers was presented by the Botanical Society of America on the geographic distribution of plants. A symposium was also held bv the Educational Section of the Association a~d the American Association for the Study of the Feeble-Minded on the subject of mental tests and their pedagogical significance. The American Anthropological Association brought together a series of papers on the history of civilisation in the Pacific area and another on the social aspects of race factors in the Pacific area.