_Headache._--Pliny's amulet for this disease was an herb picked from the head of a statue, tied with a red thread, and worn upon the body. _Hysteria._--Monardes is quoted as saying: "When hysterical persons feel an attack coming on, they may be relieved by a stone, which will prevent, if constantly worn about the person, any subsequent attack. From my knowledge of cases of this kind, I attach credit to this amulet." _Melancholy._--Burton has treated much under the name of melancholy, and in respect of cure mentions several "amulets and things to be borne about." He recommends for head melancholy such things as hypericon, or St. John's-wort, gathered on a Friday in the hour of Jupiter, "... borne or hung about the neck, it mightily helps this affection, and drives away all fantastical spirits."[116] _Plague._--During the visitations of the plague, the inhabitants of London wore, in the region of the heart, amulets composed of arsenic, probably on account of the theory that one poison would neutralize the power of the other. Concerning this, however, Herring, in writing concerning preservatives against the pestilence, says: "Perceiving many in this Citie to weare about their Necks, upon the region of the Heart, certaine Placents or Amulets, (as preservatives against the pestilence,) confected of Arsenicke, my opinion is that they are so farre from effecting any good in that kinde, as a preservative, that they are very dangerous and hurtfull, if not pernitious, to those that weare them." Quills of quicksilver were commonly worn about the neck for the same purpose, and the powder of toad was employed in a similar way. Pope Adrian is reported to have continually carried an amulet composed of dried toad, arsenic, tormental, pearl, coral, hyacinth, smarag, and tragacanth. Among the Harleian Manuscripts is a letter from Lord Chancellor Hatton to Sir Thomas Smith written at a time of an alarming epidemic. Among other things he writes: "I am likewise bold to recommend my most humble duty to our dear mistress (Queen Elizabeth) by this LETTER AND RING, which hath the virtue to expell infectious airs, and is _to be worn betwixt the sweet duggs_, the chaste nest of pure constancy. I trust, sir, when the virtue is known, it shall not be refused for the value."[117] _Safety from Wounds._--Pettigrew gives us the two following examples: "De Barros, the historian, says that the Portuguese in vain attempted to destroy a Malay so long as he wore a bracelet containing a bone set in gold, which rendered him proof against their swords. This amulet was afterward transmitted to the Viceroy Alfonso d'Alboquerque, as a valuable present.