Pliny gives a number of such remedies. A certain spider applied in a piece of cloth, or another one ('a white spider with very elongated thin legs'), beaten up in oil is said by this ancient writer upon Natural History to form an ointment for the eyes. Similarly, 'the thick pulp of a spider's body, mixed with the oil of roses, is used for the ears.' Sir Matthew Lister, who was indeed the father of English araneology, is quoted in Dr. James's Medical Dictionary as using the distilled water of boiled black spiders as an excellent cure for wounds." (Dr. H. C. McCook in Poet-lore, Nov., 1889.) 53. Gum-tragacanth: yielded by the leguminous shrub, Astragalus tragacantha. 60. Zoar: the only one that was spared of the five cities of the plain (Genesis 14. 2). 108. Lazarus . . . fifty years of age: in The Academy, Sept. 16, 1896, Dr. Richard Garnett says: "Browning commits an oversight, it seems to me, in making Lazarus fifty years of age at the eve of the siege of Jerusalem, circa 68 A. D." The miracle is supposed to have been wrought about 33 A. D., and Lazarus would then have been only fifteen, although according to tradition he was thirty when he was raised from the dead, and lived only thirty years after. Upon this Prof. Charles B. Wright comments in Poet-lore, April, 1897: "I incline to think that the oversight is not Browning's. Let us stand by the tradition and the resulting age of sixty-five. . . . Karshish is simply stating his professional judgment. Lazarus is given an age suited to his appearance—he seems a man of fifty. The years have touched him lightly since 'heaven opened to his soul.' . . . And that marvellous physical freshness deceives the very leech himself." 177. Greek fire: used by the Byzantine Greeks in warfare, first against the Saracens at the siege of Constantinople in 673 A. D. Therefore an anachronism in this poem. Liquid fire was, however, known to the ancients, as Assyrian bas-reliefs testify. Greek fire was made possibly of naphtha, saltpetre, and sulphur, and was thrown upon the enemy from copper tubes; or pledgets of tow were dipped in it and attached to arrows. 281. Blue-flowering borage: (Borago officianalis). The ancients deemed this plant one of the four "cordial flowers," for cheering the spirits, the others being the rose, violet, and alkanet. Pliny says it produces very exhilarating effects. JOHANNES AGRICOLA IN MEDITATION