The side rows of holes only are used for transmitting the message, the centre row being required for feeding forward the paper in the transmitter.
Deep holes in the ground, rimmed with black, pockmarked the shallow valley.
They sell 'em. So what do they do with the Cheerios' holes?
It consists in punching, by means of " a puncher," a series of holes in a strip of paper in such a way that, when the strip is sent through another instrument, called the " transmitter," the holes cause the circuit to be closed at the proper times and for the proper proportionate intervals for the message to be correctly printed by the receiving instrument or recorder.
The chairs on the British system weigh about 45 or 50 lb each on important lines, though they may be less where the traffic is light, and are fixed to the sleepers each by two, three or four fastenings, either screw spikes, or round drift bolts entered in holes previously bored, or fang bolts or wooden trenails.
