"
"So that really the sorting into sexes is done by the one and the same
operation as the punching of the card," the boy remarked; "I see now.
That's a first-class idea."
"It saves a great deal of work," the older man said. "Then, too, with
the same group of motions a new card has been fed from the holder and is
in place for punching. At the same time, the schedule, which is held in
rigid alignment, has been turned just exactly the right amount to bring
the next line in the direct vision of the operator. Thus he never has
to stop and think whether he has done a line or not and never skips a
line because of an error of eyesight."
"I can understand that now," the boy answered "Now let me see whether I
really can do the rest of the card. In what you call the third
column--though it is really the fifth--I punch either 'Hd' for the Head
of the Family, 'Wf' for Wife, 'S' or 'D' for Son or Daughter, and 'Ot'
for Other?"
"That's right."
"Then, further down the same line, 'M' is Male and 'F' is Female. That's
easy enough. In the next section down, but still in the same line is 'W'
for White, 'Mu' for Mulatto, 'B' for Black, 'Ch' for Chinese, 'Jp' for
Japanese, and 'In' for Indian.
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