When no external force acts, the case which we shall consider, there are three integrals of the equations of motion (i.) T =constant, x 2 +x 2 +x 2 =F 2, a constant, (iii.) x1y1 +x2y2+x3y3 =n = **GF**, a constant; and the dynamical equations in (3) express the fact that x, x, xs.

Fischer's a-acrose therefore led to the synthesis of the dextro and laevo forms **Gf** mannose, glucose and fructose; and these substances have been connected synthetically with many other sugars by means of his cyanhydrin process, leading to higher sugars, and Wohl and.

By the portrait, it is probably **gf** King Narmer or some king related to him, that is, about the beginning of the 1st Dynasty.

The rods BC and DB carry two small rods EF, **GF** jointed at F; at this joint there is a pin which slides in a slot on the rod BH, which is normal to the mirror X.

Rods EF, **GF** are such that Befg is a rhombus.