In response to the crying need of the present day a large number of new religious associations have sprung up during the last few years. On one hand the appeal of the interior life in the midst of a materialistic and superficial world, and ou the other the urgent need of apostolic work, have brought into being a new type of society adapted to modern circumstances. We describe here a Spanish institution, the Teresian Institute, which has already existed for thirty-seven years and which can be seen today as a flourishing member of the apostolate.