------------------------------------------------------------------------- | Liquid solution. | Solid solution. ------------------------------------------------------------ Temperature. | | | | | Per cent. | Per cent. | Per cent. | Per cent. | naphthalene. | acid. | naphthalene. | acid. ------------------------------------------------------------------------- 62° | -- | 100 | -- | 100 60° | 4.0 | 96.0 | 1.7 | 98.3 55° | 21.0 | 79.0 | 2.1 | 97.9 53.5° | 29.4 | 70.0 | -- | -- 55° | 31.3 | 68.7 | 59.6 | 40.4 60° | 42.4 | 57.6 | 80.3 | 19.7 65° | 53.3 | 46.7 | 89.2 | 10.8 70° | 69.7 | 2.3 | 95.4 | 4.6 75° | 84.4 | 15.6 | 96.6 | 3.4 79.9° | 100 | -- | 100 | -- ------------------------------------------------------------------------- At the eutectic point the liquid solution is in equilibrium with two different mixed crystals the composition of which is represented by D and E respectively. If, therefore, a fused mixture containing the two components A and B in the proportions represented by C is cooled down, it will, when the temperature has reached the point C, solidify completely to a _conglomerate_ of mixed crystals, D and E. [Illustration: FIG. 57.] [Illustration: FIG. 58.]