[_Thus with Hermetic art_. l. 487. The sympathetic inks made by Zaffre dissolved in the marine and nitrous acids have this curious property, that being brought to the fire one of them becomes green, and the other red; but what is more wonderful, they again lose these colours, (unless the heat has been too great,) on their being again withdrawn from the fire. Fire-screens have been thus painted, which in the cold have shewn only the trunk and branches of a dead tree, and sandy hills, which on their approach to the fire have put forth green leaves and red flowers, and grass upon the mountains. The process of making these inks is very easy, take Zaffre, as sold by the druggists, and digest it in aqua regia, and the calx of Cobalt will be dissolved; which solution must be diluted with a little common water to prevent it from making too strong an impression on the paper; the colour when the paper is heated becomes of a fine green-blue. If Zaffre or Regulus of Cobalt be dissolved in the same manner in spirit of nitre, or aqua fortis, a reddish colour is produced on exposing the paper to heat. Chemical Dictionary by Mr. Keir, Art. Ink Sympathetic.] XI. "With crest of gold should sultry SIRIUS glare, And with his kindling tresses scorch the air; With points of flame the shafts of Summer arm, 500 And burn the beauties he designs to warm;-- --So erst when JOVE his oath extorted mourn'd, And clad in glory to the Fair return'd; While Loves at forky bolts their torches light, And resting lightnings gild the car of Night; 505 His blazing form the dazzled Maid admir'd, Met with fond lips, and in his arms expir'd;-- NYMPHS! on light pinion lead your banner'd hosts High o'er the cliffs of ORKNEY'S gulphy coasts; Leave on your left the red volcanic light, 510 Which HECCLA lifts amid the dusky night; Mark on the right the DOFRINE'S snow-capt brow, Where whirling MAELSTROME roars and foams below; Watch with unmoving eye, where CEPHEUS bends His triple crown, his scepter'd hand extends; 515 Where studs CASSIOPE with stars unknown Her golden chair, and gems her sapphire zone; Where with vast convolution DRACO holds The ecliptic axis in his scaly folds, O'er half the skies his neck enormous rears, 520 And with immense meanders parts the BEARS; Onward, the kindred BEARS with footstep rude Dance round the Pole, pursuing and pursued. [_With stars unknown_. l. 515. Alluding to the star which appeared in the chair of Cassiopea in the year 1572, which at first surpassed Jupiter in magnitude and brightness, diminished by degrees and disappeared in 18 months; it alarmed all the astronomers of the age, and was esteemed a comet by some.--Could this have been the Georgium sidus?]