THE “Universala Esperanto-Kongreso” is to take place this year at University College, London, on July 30–August 6. A recent article by Dr. D. R. Duncan, published in the Scientific Worker, directs attention to the great potential value of Esperanto as a means of intercommunication between men of science. Being "intelligible to any educated European"without previous study, it is eminently suitable for scientific abstracts in cases where the original paper was published in a language little known outside its own country. Reports consisting largely of tables such as the "International Critical Tables"might well, it is suggested, use Esperanto instead of numerous parallel columns in different languages. Esperanto is, it appears, much used in Japan for scientific papers. A few journals outside Japan give Esperanto summaries at the end of papers published in the journal's own language, for example, the Bull. Soc. Franfaise des Electriciens, the Phare Medical and the Bevista da Sociedade de Geografla do Bio de Janeiro.