In drawing I rarely use the right hand; and for any specially delicate piece of work, should find it inadequate to the task. The same facility is illustrated in the varying caligraphy of a letter of Professor Morse, in which he furnished me with the best practical illustration of the ambidextrous skill so frequently acquired by the left-handed. He thus writes: “You will observe that the first page is written with the right hand, the upper third of this page with the left hand, the usual way [but with reversed slope], the middle third of the page with the left hand, reversed [_i.e._ from right to left], and now I am again writing with the right hand. As I have habitually used the right hand in writing, I write more rapidly than with the other.” In the case of Professor Morse, I may add, the indications of hereditary transmission of left-handedness nearly correspond with my own. His maternal uncle, and also a cousin, are left-handed. In my case, the same habit appeared in a paternal uncle and a niece; and my grandson manifested at an early age a decided preference for the left hand. Even in the absence of such habitual use of both hands as Professor Morse practises, the command of the left hand in the case of a left-handed person is such that very slight effort is necessary to enable him to use the pen freely with it. An apt illustration of this has been communicated to me by the manager of one of the Canadian banks. He had occasion to complain of the letters of one of his local agents as at times troublesome to decipher, and instructed him in certain cases to dictate to a junior clerk who wrote a clear, legible hand. The letters subsequently sent to the manager, though transmitted to him by the same agent, presented in signature, as in all else, a totally different caligraphy. The change of signature led to inquiry; when it turned out that his correspondent was left-handed, and by merely shifting the pen to the more dexterous hand, he was able, with a very little practice, to substitute for the old cramped penmanship an upright, rounded, neat, and very legible handwriting.