To make known to the public some mechanical apparatus which will facilitate vocal culture, to demonstrate the difficulties attending the latter, and to point out the means best adapted to overcome them, is the scope of the present lecture. The long experience I have had in teaching will thus, I hope, prove of service to others who are earnestly working and seeking improvement. It is true that theory and principles can be learnt from books, but it is also true that these are as numerous and varied as the sounds on which they treat. Every teacher has his own method of imparting science and his own individuality in enforcing it. I do not wish to condemn these teachings, or to fix a theory upon the formation of the sounds based upon anotomical and physiological principles; but to suggest opportunities for those who desire successful training in this difficult science, now neglected by so many in some of the most essential points; and I propose to find the cause of the deplorable disparity of tone in many fine artistic voices of our days, which, in youth, from natural gifts promised a bright career in art, whereas they were subsequently rapidly lost to fame. My object is to review briefly the difficulties attending the study of vocal culture, and to suggest how they may be overcome, adding the latest results of modern science, and my own personal experience.