[_Living diamonds blaze_. l. 228. Sir Isaac Newton having observed the great power of refracting light, which the diamond possesses above all other crystallized or vitreous matter, conjectured that it was an inflammable body in some manner congealed. Insomuch that all the light is reflected which falls on any of its interior surfaces at a greater angle of incidence than 241/2 degrees; whereas an artificial gem of glass does not reflect any light from its hinder surface, unless that surface is inclined in an angle of 41 degrees. Hence the diamond reflects half as much more light as a factitious gem in similar circumstances; to which must be added its great transparency, and the excellent polish it is capable of. The diamond had nevertheless been placed at the head of crystals or precious stones by the mineralogists, till Bergman ranged it of late in the combustible class of bodies, because by the focus of Villette's burning mirror it was evaporated by a heat not much greater than will melt silver, and gave out light. Mr. Hoepfner however thinks the dispersion of the diamond by this great heat should be called a phosphorescent evaporation of it, rather than a combustion; and from its other analogies of crystallization, hardness, transparency, and place of its nativity, wishes again to replace it amongst the precious stones. Observ. sur la Physique, par Rozier, Tom. XXXV. p. 448. See new edition of the Translation of Cronsted, by De Costa.] "Thus, for attractive earth, inconstant JOVE 230 Mask'd in new shapes forsook his realms above.-- First her sweet eyes his Eagle-form beguiles, And HEBE feeds him with ambrosial smiles; Next the chang'd God a Cygnet's down assumes, And playful LEDA smooths his glossy plumes; 235 Then glides a silver Serpent, treacherous guest! And fair OLYMPIA folds him in her breast; Now lows a milk-white Bull on Afric's strand, And crops with dancing head the daisy'd land.-- With rosy wreathes EUROPA'S hand adorns 240 His fringed forehead, and his pearly horns; Light on his back the sportive Damsel bounds, And pleased he moves along the flowery grounds; Bears with slow step his beauteous prize aloof, Dips in the lucid flood his ivory hoof; 245 Then wets his velvet knees, and wading laves His silky sides amid the dimpling waves. While her fond train with beckoning hands deplore, Strain their blue eyes, and shriek along the shore; Beneath her robe she draws her snowy feet, 250 And, half-reclining on her ermine seat, Round his raised neck her radiant arms she throws, And rests her fair cheek on his curled brows; Her yellow tresses wave on wanton gales, And high in air her azure mantle sails. 255 --Onward He moves, applauding Cupids guide, And skim on shooting wing the shining tide; Emerging Triton's leave their coral caves, Sound their loud conchs, and smooth the circling waves,