THE importance of an international forum of publication in science is not likely to be underestimated by readers of Nature'. In many branches of science the responsibility was undertaken before the War by journals published in Germany and, to a less extent, in Italy and Japan. Their sudden removal by war was not so seriously felt at the time, owing to the temporary reduction of fundamental research, but it has now raised a serious problem. The position of genetics in this regard is a special one. This science is not only rapidly advancing but it is also rapidly broadening its scope. Indeed it is beginning to cover every aspect of biology and every form of life. It is beginning to weave the threads of many different sciences and techniques into a single pattern. Darwinism and biometry, Mendelism and cytology are being joined together, and the needs of medicine and agriculture are being met by the establishment of a single fundamental discipline. But the work that is necessary to accomplish this task is scattered over the whole world and is developing different characters in different countries.