More likely is that in the 1890s you'd be likely to see quite a few adults learning to ride a bicycle for the very first time. It's easy to forget how much learning is involved in becoming proficient in keeping a bicycle upright since it quickly becomes second nature once mastered. Yes, a bicycle when given a shove will stay upright on its own for quite some distance, but not if you put an unskilled rider on it. Teach adults, who never had a bike as children, how to ride and you'll appreciate that it takes some practice and trial-and-error to learn the proper technique for balancing.