But it is very probable that narcotics act upon the genital organs in no other way than they do upon the other ones, that is to say, they certainly do simulate them, but only proportionately to the increase of force in the circulation of the blood and to the power or tone of the muscular fibre. It is also very probable that the voluptuous impressions superinduced by them depend upon the circumstances under which those persons are, who habitually indulge in them, and that they are connected with other impressions or with particular ideas which awaken them. If, for instance, in a Sultan reclining upon his sofa, the intoxication of opium is accompanied by images of the most ravishing delight, and if it occasions in him that sweet and lively emotion which the anticipation of those delights awakens throughout the whole nervous system, the same inebriation is associated in the mind of a Janizary or a Spahi with ideas of blood and carnage, with paroxysms, the brutal fury of which has certainly, nothing in common with the tender emotions of love. It is in vain to allege in proof of the aphrodisiacal qualities of opium the state of erection in which the genital members of Turks are found when lying dead on a field of battle,[159] for this state depends upon, or is caused by, the violent spasm or universal convulsive movements with which the body is seized in the moment of death: the same phenomenon frequently appears in persons who suffer hanging. In warm countries, it is the concomitant of death from convulsive diseases, and in our own climate, it has been observed in persons who have died from apoplectic attacks.