4. It is probable, from the uniformly stimulating manner in which poisons of all kinds act upon the human body, that bleeding would be useful in obviating their baneful effects. Dr. John Dorsey has lately proved its efficacy, in the case of a child that was affected with convulsions, in consequence of eating the leaves of the datura stramonium.
5. It has been the misfortune of diabetes to be considered by physicians as exclusively a local disease of weak morbid action, or as the effect of simple debility in the kidneys; and hence stimulating and tonic medicines have been exclusively prescribed for it. This opinion is not a correct one. It often affects the whole arterial system, more especially in its first stage, with great morbid action. In two cases of it, where this state of the blood-vessels took place, I have used blood-letting with success, joined with the common remedies for inflammatory diseases.
6. In dislocated bones which resist both skill and force, it has been suggested, that bleeding, till fainting is induced, would probably induce such a relaxation in the muscles as to favour their reduction. This principle was happily applied, in the winter of 1795, by Dr. Physick, in the Pennsylvania hospital, in a case of dislocated humerus of two months continuance. The doctor bled his patient till he fainted, and then reduced his shoulder in less than a minute, and with very little exertion of force. The practice has since become general in Philadelphia, in luxations of large bones, where they resist the common degrees of strength employed to reduce them.
In contemplating the prejudices against blood-letting, which formerly prevailed so generally in our country, I have been led to ascribe them to a cause wholly political. We are descended chiefly from Great-Britain, and have been for many years under the influence of English habits upon all subjects. Some of these habits, as far as they relate to government, have been partly changed; but in dress, arts, manufactures, manners, and science, we are still governed by our early associations. Britain and France have been, for many centuries, hereditary enemies. The hostility of the former to the latter nation, extends to every thing that belongs to their character. It discovers itself, in an eminent degree, in diet and medicine. Do the French love soups? the English prefer solid flesh. Do the French love their meats well cooked? the English prefer their meats but half roasted. Do the French sip coffee after dinner? the English spend their afternoons in drinking Port and Madeira wines. Do the French physicians prescribe purges and glysters to cleanse the bowels? the English physicians prescribe vomits for the same purpose. Above all, do the French physicians advise bleeding in fevers? the English physicians forbid it, in most fevers, and substitute sweating in the room of it. Here then we discover the source of the former prejudices and errors of our country-men, upon the subject of blood-letting. They are of British origin. They have been inculcated in British universities, and in British books; and they accord as ill with our climate and state of society, as the Dutch foot stoves did with the temperate climate of the Cape of Good Hope[65].
It is probable the bad consequences which have followed the indiscriminate use of the lancet France, and some other countries, may have contributed in some degree to create the prejudices against it, which are entertained by the physicians in Great-Britain. Bleeding, like opium, has lost its character, in many cases, by being prescribed for the name of a disease. It is still used, Mr. Townsend tells us, in this empirical way in Spain, where a physician, when sent for to a patient, orders him to be bled before he visits him. The late just theory of the manner in which opium acts upon the body, has restrained its mischief, and added greatly to its usefulness. In like manner, may we not hope, that just theories of diseases, and proper ideas of the manner in which bleeding acts in curing them, will prevent a relapse into the evils which formerly accompanied this remedy, and render it a great and universal blessing to mankind?
Footnotes:
[48] Traite des Fievres de l'Isle de St. Domingue, vol. ii. p. 76.
[50] Magis esse adjuvandos senes, missione sanguinis dum morbus postulat, aut corpus eorum habitus malus est, quam ubi hæc (quod absonum videbitur) juvenibus contingunt.