Tag Archives: aconite

1854: John Hendrickson, junk science victim

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On this date in 1854, an Albany, N.Y. man named John Hendrickson hanged for the murder by aconite poisoning of his wife, Maria. “He has suffered the highest penalty of the law,” New York’s Weekly Herald pronounced the next day — “but whether justly or not, will likely never be known on earth.”

Whatever the prisoner’s denials,* a web of suspicious circumstances clasped the hemp around his throat. Hendrickson, whose family had some money and connections, fought the conviction tooth and nail; his then-unusual three appeals, plus clemency petition to the governor, stretched the time from conviction to execution out to nearly a year. “The evidence adduced … was so entirely circumstantial, and the testimony of the scientific men so liable to doubt and contradiction, that it was generally feared the murderer would escape,” a Boston Post correspondent reported.** But not to worry: “the atmosphere of guilt seemed to surround him in the whole county; not a man could be found that, at heart, believed him innocent.” We’re scarcely prepared at this distance to assert an affirmative case for the man’s innocence, but in some ways it reads like an antebellum Cameron Willingham case, all the way down to the dubious forensic evidence.

Like Willingham, Hendrickson was a less than stellar husband. He was noted for abusing his wife, philandering, and doing both together when he “communicated to her a loathsome veneral disease.”

The supposed murder motivation was his wife’s recent inheritance of the estate of her father, who died just a few months before the murder. Little could really be proven save by inference from the man’s bad character; in classic tunnel-vision fashion, the record suggests nearly every data point became fixed according to this theory. For example, Hendrickson’s trial prosecutors read into evidence — in the part of their presentation they called the “Moral Evidence” — that Hendrickson remarked at his wife’s autopsy that “they won’t find arsenic.” You and I might think he’s saying that the examination will dispel the gathering suspicions of poisoning, and saying it by reference to the chemical that was the metonym for poisoning in the nineteenth century. For the state, his uttering these words was

as if he knew (as he undoubtedly did) the precise poison which she had swallowed — as if he knew that that common poison, which is found in most cases of the kind, had not been given by the murderer in this case, and hence they won’t find arsenic. Ah! gentlemen, it was nature speaking out, as she often unconsciously or unguardedly will, disclosing the otherwise well concealed and apparently undiscoverable crime.

(This is why you don’t talk to police.)

The district attorney introduced evidence courtesy of chemists named Salisbury and Swinburne, to the effect that it was no mean arsenic that carried away Maria Hendrickson but the more exotic potion of aconite — derived from a toxic herb seeded (per Ovid) by Cerberus himself.

One can peruse the evidence presented in the case here, but the most remarkable part of this trial record is the appendix — wherein numerous medical men, including a former teacher of Dr. Salisbury, skewer the forensic processes used to decide that Maria Hendrickson died by poison and even offer to reproduce them in person under the eyes of Gov. Horatio Seymour to prove their unreliability. Their findings harshly undercut the only concrete evidence that any murder took place at all.

“I am pained and oppressed with the conviction that the medical witnesses for the prosecution have, in a main point of this case, abused the confidence with which criminal courts so often compliment the man of science,” one writes — words that could still today be applied to many disciplines of junk science that have disappeared bodies into oubliettes on the strength of lie detectors, bite mark analysis, matching hair samples, and suchlike hocus-pocus.

We turn from the contemplation of this subject with feelings of sorrow, not that any of ours have been crushed under the wheels of mutilated justice, set in motion by ignorance and false science, but we feel now, as we have always felt, that a great personal wrong has been committed under the authority of law, for which there can be no atonement, as the dead cannot be brought to life, nor the blasted feelings of the living restored.

It would be well, too, for judges and jurors, who are very often hasty and inconsiderate in letting their feelings and prejudices get the better of their judgment, to remember that life, human life, is neither a toy nor a rattle, but the gift of God; when once extinguished, no matter how, it is gone forever, and the dead never rise again.

-Dr. Charles A. Lee, reviewing the Hendrickson case

* Hendrickson’s final message to his parents via his spiritual advisor, on the eve of his hanging:

To-morrow I am to die, and standing as I do on the brink of eternity, I wish to say to you, in the presence of that God before whom I am so soon to appear, that I am entirely innocent of the crime of murdering my wife. I did not give her poison. I do not know that any one gave her poison. She did not come to her death by violence of any kind, so far as I know. I believe she died a natural death. She did not vomit on the night of her death. [This remark touches the disputed forensic evidence; vomiting would be a symptom of poisoning, and state chemists’ assertion that Maria had done so was among the conclusions challenged by outside scientists. -ed.] I never knew that there was such an article as aconite in the world, until after I was in jail. Nor did I know it by any other name. I do not know that I have anything further to add, except to say some farewell words to my parents. But you will remember what I have said to you, and inform them of it. I wish you to make it public.

** Transcribed here via the Portland (Me.) Advertiser of Apr. 18, 1854.

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