The difficult thing is to stop just _before_ you begin to feel the slightest sensation of weariness. In these fall days any one can ride along through the country, and while moving feel invigorated by the force of the breeze which the movement of the wheel creates. But when she does stop, the girl suddenly feels "worn out," perhaps a little dizzy, or at least tired, and rather inclined to get into a car and ride home, while some one else pushes her wheel along for her. Any girl of spirit in such a situation immediately makes up her mind that she will not give in to this feeling of weariness, and that she will ride home whether she feels tired or not. The result is a bad headache, a doctor, and perhaps an injunction from her parents not to ride a bicycle again. There are girls who can ride twenty, forty, or sixty miles in a day, but this is because they have begun gradually, and increased their distances by degrees as their bodies got into what is called "good condition." Let us set down a rule, then, on this subject, and say that the average girl of fifteen ought not to ride more than five miles, by cyclometer, in any one day, until she has taken thirty rides within two months--that is to say, until she has ridden at least once in every two days. Then she should not exceed ten miles in a day, or at one time, until she has ridden a bicycle half a year. After this she can estimate about what she can do without tiring herself, and she can gradually work up to twenty miles at a time without ever having that fagged feeling which is a sure sign that the thing has been overdone. So much for the distance. Now a word as to costume. We are just in the midst of a change in ideas as to girls' bicycle costumes. No one who has ridden ten times fails to complain of skirts, be they never so well made. They catch in the rear wheel. They make a sail to catch all the wind when the wind is blowing against you, and only a bicyclist knows what a head wind really means. And finally they are continually in the way.