In general I found about 150 gesture signals in

established use among American school children, namely:

In all, 110; besides the compass points, the features of the face, the parts of the body, the numerals up to 20 or 30, and a great many half-established signs, such as

book, telephone, ring the bell, etc., which, if allowed, would bring the number up to nearly 200.

As another line of observation, I have asked New York boys, “How many signs does the Broadway policeman use in regulating the traffic?” Any bright child remembers presently that the officer seldom speaks, could scarcely be heard if he did. Indeed, he relies chiefly on Sign Language and hourly uses the established signs for “Stop,” “Come on,” “Come here,” “Go right,” “Go left,” “Go back,” “Hurry up,” “Go easy,” “I warn you,” “I’ll punish you,” “Pass,” “Keep behind me,” “Scorn,” and, perhaps, one or two others.

While not infrequently the small boy responds with the sign of “insolent defiance” that is used the world ’round, and was probably invented by Cain and Abel.

Similarly, the car conductor uses the signs for “Do you want this car?” “Do you want transfer?” “How many?” “Go on,” as well as most of the above.

Evidently, then, the Sign Language is used of necessity in much of our life where speech is impossible.

CODES, ETC.