The indescribable cruelty shown towards the Bábí victims caused an Austrian officer, Captain von Goumoens, who at the time was in the employ of the Sháh, to tendered his resignation: - here is his report

An Austrian officer, Captain von Goumoens, in the employ of the Sháh at that time, was, it is reliably stated, so horrified at the cruelties he was compelled to witness that he tendered his resignation. “Follow me, my friend,” is the Captain’s own testimony in a letter he wrote two weeks after the attempt in question, which was published in the “Soldatenfreund,” “you who lay claim to a heart and European ethics, follow me to the unhappy ones who, with gouged-out eyes, must eat, on the scene of the deed, without any sauce, their own amputated ears; or whose teeth are torn out with inhuman violence by the hand of the executioner; or whose bare skulls are simply crushed by blows from a hammer; or where the bazaar is illuminated with unhappy victims, because on right and left the people dig deep holes in their breasts and shoulders, and insert burning wicks in the wounds. I saw some dragged in chains through the bazaar, preceded by a military band, in whom these wicks had burned so deep that now the fat flickered convulsively in the wound like a newly extinguished lamp. Not seldom it happens that the unwearying ingenuity of the Oriental leads to fresh tortures. They will skin the soles of the Bábí’s feet, soak the wounds in boiling oil, shoe the foot like the hoof of a horse, and compel the victim to run. No cry escaped from the victim’s breast; the torment is endured in dark silence by the numbed sensation of the fanatic; now he must run; the body cannot endure what the soul has endured; he falls. Give him the coup de grâce! Put him out of his pain! No! The executioner swings the whip, and—I myself have had to witness it—the unhappy victim of hundredfold tortures runs! This is the beginning of the end. As for the end itself, they hang the scorched and perforated bodies by their hands and feet to a tree head downwards, and now every Persian may try his marksmanship to his heart’s content from a fixed but not too proximate distance on the noble quarry placed at his disposal. I saw corpses torn by nearly one hundred and fifty bullets.” “When I read over again,” he continues, “what I have written, I am overcome by the thought that those who are with you in our dearly beloved Austria may doubt the full truth of the picture, and accuse me of exaggeration. Would to God that I had not lived to see it! But by the duties of my profession I was unhappily often, only too often, a witness of these abominations. At present I never leave my house, in order not to meet with fresh scenes of horror … Since my whole soul revolts against such infamy … I will no longer maintain my connection with the scene of such crimes.” Little wonder that a man as far-famed as Renan should, in his “Les Apôtres” have characterized the hideous butchery perpetrated in a single day, during the great massacre of Ṭihrán, as “a day perhaps unparalleled in the history of the world!” 

- Shoghi Effendi  (Chapter 5, God Passes By)

The unimaginable bravery the martyrs publicly displayed

Women and children could be seen led down the streets by their executioners, their flesh in ribbons, with candles burning in their wounds, singing with ringing voices before the silent spectators: “Verily from God we come, and unto Him we return!” As some of the children expired on the way their tormentors would fling their bodies under the feet of their fathers and sisters who, proudly treading upon them, would not deign to give them a second glance. A father, according to the testimony of a distinguished French writer, rather than abjure his faith, preferred to have the throats of his two young sons, both already covered with blood, slit upon his breast, as he lay on the ground, whilst the elder of the two, a lad of fourteen, vigorously pressing his right of seniority, demanded to be the first to lay down his life. 

- Shoghi Effendi  (Chapter 5, God Passes By)

The “fiendish cruelty of the populace” towards Bábí victims

Others had their eyes gouged out, were sawn asunder, strangled, blown from the mouths of cannons, chopped in pieces, hewn apart with hatchets and maces, shod with horse shoes, bayoneted and stoned. Torture-mongers vied with each other in running the gamut of brutality, while the populace, into whose hands the bodies of the hapless victims were delivered, would close in upon their prey, and would so mutilate them as to leave no trace of their original form. The executioners, though accustomed to their own gruesome task, would themselves be amazed at the fiendish cruelty of the populace. 

- Shoghi Effendi  (Chapter 5, God Passes By)

The brutal punishment of the three Bábís directly involved in the attempted assassination of the Sháh

The first to suffer on that calamitous day was the ill-fated Sádiq, who was instantly slain on the scene of his attempted crime. His body was tied to the tail of a mule and dragged all the way to Tihrán, where it was hewn into two halves, each of which was suspended and exposed to the public view, while the Tihránís were invited by the city authorities to mount the ramparts and gaze upon the mutilated corpse. Molten lead was poured down the throat of his accomplice, after having subjected him to the torture of red-hot pincers and limb-rending screws. A comrade of his, Hájí Qásim, was stripped of his clothes, lighted candles were thrust into holes made in his flesh, and was paraded before the multitude who shouted and cursed him. 

- Shoghi Effendi  (Chapter 5, 'God Passes By')