Both Mr. Gilman and Mr. Keith, the teachers who prepared her for college, were struck by her power of constructive reasoning; and she was excellent in pure mathematics, though she seems never to have enjoyed it much. Some of the best of her writing, apart from her fanciful and imaginative work, is her exposition in examinations and technical themes, and in some letters which she found it necessary to write to clear up misunderstandings, and which are models of close thinking enforced with sweet vehemence.