However, there are a considerable number of exceptions to this statement. The word _integral_ is quite as international as the symbol ∫ and the chemical symbol Tl is pronounced everywhere _thallium_, or something very like it. On looking through the table of the chemical elements one finds that more than two-thirds of the names possess similar sounds in the chief languages. Differences occur only in the case of the well-known elements, where the words employed in daily life have found their way into science, whilst the newly discovered elements all possess international names. It follows from this that the further problem of assigning an international system of sounds to scientific concepts has been in certain departments of science already approximately solved. It is true that the sound is still somewhat dependent on the speech basis of the particular nation, so that, for example, not inconsiderable deviations may occur in English. But, as the written and printed word is always simultaneously known, the recognition of a name as pronounced by a foreigner does not cause any very great difficulty. There exists here a field of work for those who are interested in the idea of an artificial language which is as fertile as it is interesting. As is well known, we scientific men suffer a good deal from the fact that the same words are frequently employed for the vague ideas of daily life as well as for the perfectly definite concepts of science. This is indeed one of the most important reasons why new designations for scientific concepts should, as far as possible, be taken from the dead languages, such designations being thereby already international. It ought therefore to be a comparatively easy task to devise by means of this international material and the linguistic rules of the language of the Delegation a system of international names for the clearly defined concepts of the different sciences.