As the indicated horse-power of the engine increases, the weight of steam discharged increases, and the smoke-**Lox** vacuum is increased, thereby causing more air to flow through the furnace and increasing the rate of combustion.

The Flos of Leonardo turns on the second question set by John of Palermo, which required the solution of the cubic equation x 3 -{-2x'-}-**lox** = 20.

Thus the number **lox** in the arithmetical column corresponds to 10 8 (1.0001) x in the geometrical column; the intermediate numbers being obtained by interpolation.

If we divide the numbers in the geometrical column by lo g the correspondence is between **lox** and (I 000l) x, and the table then becomes one of antilogarithms, the base being (1.0001) 1 / 10, viz.

The translation parallel to this axis is **lox** + mly + nhz (Xf + uv + vi) Ic. (8) The linear magnitude which measures the ratio of translation to rotation in a screw is called the pitch.

Hence ..Ox d /.Ox\ d **lOx**, d I.O~c\ .Ox ~ _~~_) =~x-/ x.