2152
JOURNAL 01; CHEhlICAL EDL~CATION
SEPTEMBER, 1930
to perform the two-fold service of sending out high-school teachers of greater usefulness and of making chemistry more easily continuous for the high-school student when he enters college. Such courses carefully taken by the college man will enable him t o intelligently criticize the work of the college of education in teacher-training work and directed teaching. Such criticism may lead him to change his own methods or it may lead to a lively combat in which he seeks t o deliver a likely chemist from an impossible situation. If he decides to fight the education people he will have a t hand weapons which they will feel. He might even convince some of them. If he concludes that the education people are right in their present methods, then like a true man of science, he will join forces with them and use the educational material a t hand for the building of a greater teacher. But perhaps all this is hardly worthwhile for the turning out of teachers, merely, so he may seek another reward in the students who come to his own college classes. After all, the most valuable college teacher is the one who understands not only the subject in which he is interested but the men and women before him, their difficult adjustments, their enthusiasms, and even their mistaken ideas about things precious to the teacher. Perhaps the college teacher is a t the present time fully able, in chemistry, to help the stndent make his adjustments which are so difficult, keep enthusiasms high, and happily set his feet on the right track. Such a teacher does not need courses in education, but he is of the minority.
Indium Made Pure by Electrolysis. The curiosity metal, indium, only about a pound of which has been isolated from its ores, is produced 9 x 9 per cent pure by electrolysis. Although it is very rare and what little there is of it brings for experimental purposes about six times as much as platinum, scientists are hopeful that a use will be found for its peculiar properties. I t melts a t a much lo-wer temperature than tin and is very soft and ductile. Electrolysis separates it from the residues of such ores as iron, aluminum, titanium, and silicon, where it is found in small quantities. L. R. Westbrook, of Cleveland, recently told the American Eiectrochemical Society.-Sc
