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Both can earn more money than each could earn separately, and the skilled man who formerly worked the second lathe is released. In the same shop a woman watched a skilled man doing slot-drilling a process in which thousandths of an inch matter for a fortnight. Now she runs the machine herself by day, while the man works it on the night shift.

A table that accompanies the apparatus has been constructed upon this basis, and does away with the necessity of making calculations. An air that contained ten thousandths of CO , or even five, would be almost as deleterious, in my opinion, as one of two per cent. It is of no account, then, to know the proportions intermediate to these round numbers.

The spores live in the earth, it has been discovered, especially in cultivated soil, and they are extraordinarily long-lived, lying dormant for years, waiting for a chance to develop. These rods you saw are only from five to fifteen thousandths of a millimeter long and not more than one- thousandth of a millimeter broad. "You can't see them move here, because the air has paralyzed them.

According to Mathieu, then, only 57 thousandths or 5.7 per cent of the precipitation is intercepted by trees. Surrell, Etude sur les Torrents, 2d ed., ii., p. 98. By order of the Direction of the Forests of the Canton of Berne, a series of experiments on this subject was commenced at the beginning of the year 1869. Surrell, Etude sur les Torrents, 2d ed., ii, p. 99.

Conceding, then, that each one of these machines exactly fits into its own molecule, so as to present identically the same dimensions as well as their largest possible dimensions it would require two millions of them, placed in a row, to make one millimetre, or the one three hundred and ninety-four thousandths of an inch in length, or seven hundred and eighty-eight billions of them to make one inch!