Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitlePROBLEM DEPARTMENT.AuthorsMills, C. N.PublicationSchool Science & Mathematics, 1926, Vol 26, Issue 1, p92ISSN0036-6803Publication typeArticleDOI10.1111/j.1949-8594.1926.tb05690.x