He found no end of trouble in teaching her to "blend the registers," and she had utterly failed to acquire the art.

One summer she came back for professional services and told her troubles.

During the few weeks of her stay she followed the author's suggestions, and was fully convinced of their correctness and efficiency.

Upon returning to her lessons, she followed, without any explanations, the method that had been outlined for her.

Her success in "blending the registers" was a surprise to her teacher who heartily congratulated her upon what she had accomplished during the summer.
Another case is that of a young lady who was under the author's direction as to vocal culture from childhood.