"The qualifications required to be a successful nurse are necessarily of a high order, and this applies not only to the trained nurse, but to her embryo sister who wishes to adopt nursing as a calling. In the first place she must be not only be physically, but constitutionally strong. She must be not only well formed, but must have certain powers of resistance. A girl, for example, who is subject to sick headaches, or who readily "knocks up," will never make a good nurse. The best type of nursing girl is one who is tall and strong, and who has a certain suppleness of movement. One who is accustomed to play lawn-tennis, who can ride, and skate, and row, makes the best material.