1. We learn the reason why, in some instances, the fever does not spread

from a person who sickens or dies at sea, who had carried the seeds of it

in his body from a sickly shore. It is because no febrile miasmata exist

in the bodies of the rest of the crew to be excited into action by any

peculiar smell from the disease, or by fear or fatigue, and because no

morbid excretions are generated by the person who dies. The fever which

prevailed on board the Nottingham East-Indiaman, in the year 1766,

affected those forty men only, who had slept on shore on the island of

Joanna twenty days before. Had the whole crew been on shore, the disease

would probably have affected them all, and been ascribed to contagion

generated by the first persons who were confined by it[45]. A Danish

ship, in the year 1768, sent twelve of her crew on shore for water. They

were all seized after their return to the ship with malignant fever, and

died without infecting any person on board, and from the same causes

which preserved the crew of the Nottingham Indiaman[46].

[45] Observations on the Bilious Fevers usual in voyages to the

East-Indies, by James Badinach, M. D. Medical Observations and

Inquiries, vol. iv.

[46] Clarke on the Diseases of Long Voyages to Hot Climates, p. 123,

125.

2. We learn the reason why the disease sometimes spreads through a whole

ship's crew, apparently from one or more affected persons. It is either

because they have been confined to small and close berths by bad weather,

or because the fever has been protracted to a typhus or chronic state, or

because the bodies of the whole crew are impregnated with morbid

miasmata, and thus predisposed to have the disease excited in the manner

that has been mentioned. In the last way it was excited in most of the

crew of the United States frigate, in the Delaware, opposite to the city

of Philadelphia, in the year 1797. It appears to have spread, from a

similar cause, from a few sailors, on board the Grenville Indiaman, after

touching at Batavia. The whole crew had been predisposed to the disease

by inhaling the noxious air of that island.

The same reasons account for the fever expiring in a healthy village or

country; also for its spreading when carried to those towns which are

seated upon creeks or rivers, and in the neighbourhood of marsh

exhalations. It has uniformly perished in the high and healthy village of

Germantown, when carried from Philadelphia, and has three times appeared

to be contagious near the muddy shores of the creeks which flow through

Wilmington and Chester.

3. From the facts that have been mentioned, we are taught to disbelieve

the possibility of the disease being imported in the masts and sails of a

ship, by a contagious matter secreted by a sailor who may have sickened

or died on board her, on a passage from a West-India island. The death in

most of the cases supposed to be imported, in this way, occurs within a

few days after the ship leaves her West-India port, or within a few days

after her arrival. In the former case, the disease is derived from

West-India miasmata; in the latter, it is derived, as was before

remarked, either from the foul air of the hold of the ship, or of the

dock or wharf to which the ship is moored.

Many other facts might be adduced to show the yellow fever not to be an

imported disease. It has often prevailed among the Indians remote from

the sea coast, and many hundred cases of it have occurred, since the year

1793, on the inland waters of the United States, from the Hudson and

Susquehannah, to the rivers of the Mississippi. In South-America, Baron

Humboldt assured me, it is every where believed to be an endemic of that

country.

These simple and connected facts, in which all the physicians in the

United States who derive the yellow fever from domestic causes have

agreed, will receive fresh support by comparing them with the different

and contrary opinions of the physicians who maintain its importation.

Some of them have asserted it to be a specific disease, and derived it

from the East and West-Indies; others derive it from Beulam, on the coast

of Africa; a third sect have called it a ship fever; a fourth have

ascribed it to a mixture of imported contagion with the foul air of our

cities; while a fifth, who believed it to be imported in 1793, have

supposed it to be the offspring of a contagion left by the disease of

that year, revived by the heat of our summers, and disseminated, ever

since, through the different cities of our country. The number of these

opinions, clearly proves, that no one of them is tenable.

A belief in the non-contagion of the yellow fever, or of its being

incommunicable except in one of the five ways that have been mentioned,

is calculated to produce the following good effects:

1. It will deliver the states which have sea-ports from four-fifths of

the expences of their present quarantine laws and lazarettoes. A very

small apparatus, in laws and officers, would be sufficient to prevent the

landing of persons affected by the ship fever in our cities, and the more

dangerous practice, of ships pouring streams of pestilential air, from

their holds, upon the citizens who live near our docks and wharves.

2. It will deliver our merchants from the losses incurred by the delays

of their ships, by long and unnecessary quarantines. It will, moreover,

tend to procure the immediate admission of our ships into foreign ports,

by removing that belief in the contagious nature of the yellow fever,

which originated in our country, and which has been spread, by the public

acts of our legislatures and boards of health, throughout the globe.

3. It will deliver our citizens from the danger to which they are

exposed, by spending the time of the quarantine, on board of vessels in

the neighbourhood of the marshes, which form the shores of the rivers or

coasts of quarantine roads. This danger is much increased by idleness,

and by the vexation which is excited, by sailors and passengers being

detained, unnecessarily, fifteen or twenty days from their business and

friends.

4. It will lead us to a speedy removal of all the excretions, and a

constant ventilation of the rooms of patients in the yellow fever, and

thereby to prevent the accumulation, and further putrefaction of those

exhalations which may reproduce it.

5. It is calculated to prevent the desertion of patients in the yellow

fever, by their friends and families, and to produce caution in them to

prevent the excitement of the disease in their own bodies, by means of

low diet and gentle physic, proportioned to the impurity of the air, and

to the anxiety and fatigue to which they are exposed in attending the

sick.

6. It will put an end to the cruel practice of quieting the groundless

fears of a whole neighbourhood, by removing the poor who are affected by

the fever, from their houses, and conveying them, half dead with disease

and terror, to a solitary or crowded hospital, or of nailing a yellow

flag upon the doors of others, or of fixing a guard before them, both of

which have been practised in Philadelphia, not only without any good

effect, but to the great injury of the sick.

7. By deriving the fever from our own climate and atmosphere, we shall be

able to foresee its approach in the increased violence of common

diseases, in the morbid state of vegetation, in the course of the winds,

in the diseases of certain brute animals, and in the increase of common,

or the appearance of uncommon insects.

8. A belief in the non-contagion of the yellow fever, and its general

prevalence from putrid animal and vegetable matters _only_, is calculated

to lead us to drain or cover marshy grounds, and to remove from our

cities all the sources of impure air, whether they exist in the holds of

ships, in docks, gutters, and common sewers, or in privies, gardens,

yards, and cellars, more especially during the existence of the signs of

a malignant constitution of the air. A fever, the same in its causes, and

similar to it in many of its symptoms, that is, the plague, has been

extirpated, by extraordinary degrees of cleanliness, from the cities of

Holland, Great-Britain, and several other parts of Europe.

The reader will perceive, from these facts and reasonings, that I have

relinquished the opinion published in my account of the yellow fever in

the years 1793, 1794, and 1797, respecting its contagious nature. I was

misled by Dr. Lining, and several West-India writers, in ascribing a much

greater extent to the excreted matters in producing the disease, than I

have since discovered to be correct, and by Bianchi, Lind, Clark, and

Cleghorn, in admitting even the common bilious fever to be contagious.

The reader will perceive, likewise, that I have changed my opinion

respecting one of the modes in which the plague is propagated. I once

believed, upon the authorities of travellers, physicians, and schools of

medicine, that it was a highly contagious disease. I am now satisfied

this is not the case; but, from the greater number of people who are

depressed and debilitated by poverty and famine, and who live in small

and filthy huts[47] in the cities of the east, than in the cities of the

United States, I still believe it to be more frequently communicated from

an intercourse with sick people by the morbid excretions of the body,

than the yellow fever is in our country. For the change of my opinion

upon this subject, I am indebted to Dr. Caldwell's and Mr. Webster's

publications upon pestilential diseases, and to the travels of Mariti and

Sonnini into Syria and Egypt. I reject, of course, with the contagious

quality of the plague, the idea of its ever being imported into any

country so as to become epidemic, by means of a knife-case, a piece of

cotton, or a bale of silks, with the same decision that I do all the

improbable and contradictory reports of an epidemic yellow fever being

imported in a sailor's jacket, or in the timbers and sails of a ship that

had been washed by the salt water, and fanned by the pure air of the

ocean, for several weeks, on her passage from the West-Indies to the

United States.

[47] M. Savary, in his Travels, says, two hundred persons live in Cairo

within a compass that accommodates but thirty persons in Paris.

It gives me pleasure to find this unpopular opinion of the non-contagion

of the plague is not a new one. It was held by the Faculty of Medicine in

Paris, in the beginning of the eighteenth century, and it has since been

defended by Dr. Stoll, of Vienna, Dr. Samoilowitz, of Russia, and several

other eminent physicians. Dr. Herberden has lately called in question the

truth of all the stories that are upon record of the plague having been

imported into England in the last century, and the researches of Sir

Robert Wilson of the British army, and of Assellini, and several other

French physicians, have produced the most satisfactory proofs of its not

being a contagious disease in its native country. A discovery more

pregnant with blessings to mankind has seldom been made. Pyramids of

error, the works of successive ages and nations, must fall before it, and

rivers of tears must be dried up by it. It is impossible fully to

appreciate the immense benefits which await this mighty achievement of

our science upon the affairs of the globe. Large cities shall no longer

be the hot-beds of disease and death. Marshy grounds, teeming with

pestilential exhalations, shall become the healthy abodes of men. A

powerful source of repulsion between nations shall be removed, and

commerce shall shake off the fetters which have been imposed upon it by

expensive and vexatious quarantines. A red or a yellow eye shall no

longer be the signal to desert a friend or a brother to perish alone in a

garret or a barn, nor to expel the stranger from our houses, to seek an

asylum in a public hospital, to avoid dying in the street. The number of

diseases shall be lessened, and the most mortal of them shall be struck

out of the list of human evils. To accelerate these events, it is

incumbent upon the physicians of the United States to second the

discoveries of their European brethren. It becomes them constantly to

recollect, that we are the centinels of the health and lives of our

fellow-citizens, and that there is a grade of benevolence in our

profession much higher than that which arises from the cure of diseases.

It consists in exterminating their causes.

A DEFENCE

OF

_BLOOD-LETTING_,

AS A

REMEDY FOR CERTAIN DISEASES.

Blood-letting, as a remedy for fevers, and certain other diseases, having

lately been the subject of much discussion, and many objections having

been made to it, which appear to be founded in error and fear, I have

considered that a defence of it, by removing those objections, might

render it more generally useful, in every part of the United States.

I shall begin this subject by remarking, that blood-letting is indicated,

in fevers of great morbid excitement,

1. By the sudden suppression or diminution of the natural discharges by

the pores, bowels, and kidneys, whereby a plethora is induced in the

system.

2. By the habits of the persons who are most subject to such fevers.

3. By the theory of fever. I have attempted to prove that the higher

grades of fever depend upon morbid and excessive action in the

blood-vessels. It is connected, of course, with preternatural sensibility

in their muscular fibres. The blood is the most powerful irritant which

acts upon them. By abstracting a part of it, we lessen the principal

cause of the fever. The effect of blood-letting is as immediate and

natural in removing fever, as the abstraction of a particle of sand is,

to cure an inflammation of the eye, when it arises from that cause.

4. By the symptoms of the first stage of violent fevers, such as a

sleepiness and an oppressed pulse, or by delirium, with a throbbing

pulse, and great pains in every part of the body.

5. By the rupture of the blood-vessels, which takes place from the

quantity or impetus of the blood in fevers of great morbid action. Let no

one call bleeding a cruel or unnatural remedy. It is one of the specifics

of nature; but in the use of it she seldom affords much relief. She

frequently pours the stimulating and oppressing mass of blood into the

lungs and brain; and when she finds an outlet for it through the nose, it

is discharged either in such a deficient or excessive quantity, as to be

useless or hurtful. By artificial blood-letting, we can choose the _time_

and _place_ of drawing blood, and we may regulate its quantity by the

degrees of action in the blood-vessels. The disposition of nature to cure

violent morbid action by depletion, is further manifested by her

substituting, in the room of blood-letting, large, but less safe and less

beneficial, evacuations from the stomach and bowels.

6. By the relief which is obtained in fevers of violent action by

remedies of less efficacy (to be mentioned hereafter), which act

indirectly in reducing the force of the sanguiferous system.

7. By the immense advantages which have attended the use of blood-letting

in violent fevers, when used at a proper time, and in a quantity suited

to the force of the disease. I shall briefly enumerate these advantages.

1. It frequently strangles a fever, when used in its forming state, and

thereby saves much pain, time, and expence to a patient.

2. It imparts strength to the body, by removing the depression which is

induced by the remote cause of the fever. It moreover obviates a

disposition to faint, which arises from this state of the system.

3. It reduces the uncommon frequency of the pulse. The loss of ten ounces

of blood reduced Miss Sally Eyre's pulse from 176 strokes to 140, in a

few minutes, in the fever of the year 1794. Dr. Gordon mentions many

similar instances of its reducing the frequency of the pulse, in the

puerperile fever.

4. It renders the pulse more frequent when it is preternaturally slow.

5. It checks the nausea and vomiting, which attend the malignant state of

fever. Of this I saw many instances in the year 1794. Dr. Poissonnier

Desperrieres confirms this remark, in his Account of the Fevers of St.

Domingo; and adds further, that it prevents, when sufficiently copious,

the troublesome vomiting which often occurs on the fifth day of the

yellow fever[48]. It has the same effect in preventing the diarrh[oe]a in

the measles.

[48] Traite des Fievres de l'Isle de St. Domingue, vol. ii. p. 76.

6. It renders the bowels, when costive, more easily moved by purging

physic.

7. It renders the action of mercury more speedy and more certain, in

exciting a salivation.

8. It disposes the body to sweat spontaneously, or renders diluting and

diaphoretic medicines more effectual for that purpose.

9. It _suddenly_ removes a dryness, and _gradually_ a blackness, from the

tongue. Of the former effect of bleeding, I saw two instances, and of the

latter, one, during the autumn of 1794.

10. It removes or lessens pain in every part of the body, and more

especially in the head.

11. It removes or lessens the burning heat of the skin, and the burning

heat in the stomach, so common and so distressing in the yellow fever.

12. It removes a constant chilliness, which sometimes continues for

several days, and which will neither yield to cordial drinks, nor warm

bed-clothes.

13. It checks such sweats as are profuse without affording relief, and

renders such as are partial and moderate, universal and salutary.

14. It sometimes checks a diarrh[oe]a and tenesmus, after astringent

medicines have been given to no purpose. This has often been observed in

the measles.

15. It suddenly cures the intolerance of light which accompanies many of

the inflammatory states of fever.

16. It removes coma. Mr. Henry Clymer was suddenly relieved of this

alarming symptom, in the fever of 1794, by the loss of twelve ounces of

blood.

17. It induces sleep. This effect of bleeding is so uniform, that it

obtained, in the year 1794, the name of an anodyne in several families.

Sleep sometimes stole upon the patient while the blood was flowing.

18. It prevents effusions of serum and blood. Hæmorrhages seldom occur,

where bleeding has been sufficiently copious.

19. It belongs to this remedy to prevent the chronic diseases of cough,

consumption, jaundice, abscess in the liver, and all the different states

of dropsy which so often follow autumnal fevers.

My amiable friend, Mrs. Lenox, furnished an exception to this remark, in

the year 1794. After having been cured of the yellow fever by seven

bleedings, she was affected, in consequence of taking a ride, with a

slight return of fever, accompanied by an acute pain in the head, and

some of the symptoms of a dropsy of the brain. As her pulse was tense and

quick, I advised repeated bleedings to remove it. This prescription, for

reasons which it is unnecessary to relate, was not followed at the time,

or in the manner, in which it was recommended. The pain, in the mean

time, became more alarming. In this situation, two physicians were

proposed by her friends to consult with me. I objected to them both,

because I knew their principles and modes of practice to be contrary to

mine, and that they were proposed only with a view of wresting the lancet

from my hand. From this desire of avoiding a controversy with my

brethren, where conviction was impossible on either side, as well as to

obviate all cause of complaint by my patient's friends, I offered to take

my leave of her, and to resign her wholly to the care of the two

gentlemen who were proposed to attend her with me. To this she objected

in a decided manner. But that I might not be suspected of an undue

reliance upon my own judgment, I proposed to call upon Dr. Griffitts or

Dr. Physick to assist me in my attendance upon her. Both these physicians

had renounced the prejudices of the schools in which they had been

educated, and had conformed their principles and practice to the present

improving state of medical science. My patient preferred Dr. Griffitts,

who, in his first visit to her, as soon as he felt her pulse, proposed

more bleeding. The operation was performed by the doctor himself, and

repeated daily for five days afterwards. From an apprehension that the

disease was so fixed as to require some aid to blood-letting, we gave her

calomel in such large doses as to excite a salivation. By the use of

these remedies she recovered slowly, but so perfectly as to enjoy her

usual health.

20. Bleeding prevents the termination of malignant, in the gangrenous

state of fever. This effect of blood-letting will enable us to understand

some things in the writings of Dr. Morton and Dr. Sydenham, which at

first sight appear to be unintelligible. Dr. Morton describes what he

calls a putrid fever, which was epidemic and fatal, in the year 1678. Dr.

Sydenham, who practised in London at the same time, takes no notice of

this fever. The reason of his silence is obvious. By copious bleeding, he

prevented the fever of that year from running on to the gangrenous state,

while Dr. Morton, by neglecting to bleed, created the supposed putrid

fevers which he has described.

It has been common to charge the friends of blood-letting with _temerity_

in their practice. From this view which has been given of it, it appears,

that it would be more proper to ascribe _timidity_ to them, for they

bleed to prevent the offensive and distressing consequences of neglecting

it, which have been mentioned.

21. It cures, without permitting a fever to put on those alarming

symptoms, which excite constant apprehensions of danger and death, in the

minds of patients and their friends. It is because these alarming

symptoms are prevented, by bleeding, that patients are sometimes

unwilling to believe they have been cured by it, of a malignant fever.

Thus, the Syrian leper of old, viewed the water of Jordan as too simple

and too common to cure a formidable disease, without recollecting that

the remedies for the greatest evils of life are all simple, and within

the power of the greatest part of mankind.

22. It prepares the way for the successful use of the bark and other

tonic remedies, by destroying, or so far weakening, a morbid action in

the blood-vessels, that a medicine of a moderate stimulus afterwards

exceeds it in force, and thereby restores equable and healthy action to

the system.

23. Bleeding prevents relapses. It, moreover, prevents that

predisposition to the intermitting and pleuritic states of fever, which

so frequently attack persons in the spring, who have had the bilious

remitting fever in the preceding autumn.

But great and numerous as the advantages of blood-letting are in fevers,

there have been many objections to it. I shall briefly enumerate, and

endeavour to refute the errors upon this subject.

Blood-letting has been forbidden by physicians, by the following

circumstances, and states of the system.

1. By warm weather. Galen bled in a plague, and Aræteus in a bilious

fever, in a warm climate. Dr. Sydenham and Dr. Hillary inform us, that

the most inflammatory fevers occur in, and succeed hot weather. Dr.

Cleghorn prescribed it copiously in the warm months, in Minorca. Dr.

Mosely cured the yellow fever by this remedy, in Jamaica. Dr. Broadbelt,

and Dr. Weston, in the same island, have lately adopted his successful

practice. Dr. Desportes speaks in the highest terms of it in all the

inflammatory diseases of St. Domingo. He complains of the neglect of it

in the rheumatism, in consequence of which, he says, the disease produces

abscesses in the lungs[49]. I have never, in any year of my practice,

been restrained by the heat of summer in the use of the lancet, where the

pulse has indicated it to be necessary, and have always found the same

advantages from it, as when I have prescribed it in the winter or spring

months.

[49] Page 35.

In thus deciding in favour of bleeding in warm weather, I do not mean to

defend its use to the same extent, as to diseases, or to quantity, in the

native and long settled inhabitants of hot climates, as in persons who

have recently migrated to them, or who live in climates alternately hot

and cold.

2. Being born, and having lived in a warm climate. This is so far from

being an objection to blood-letting in an inflammatory disease, that it

renders it more necessary. I think I have lost several West-India

patients from the influence of this error.

Medical Inquiries and Observations, Vol. 4 The Second Edition, Revised and Enlarged by the Author · 第 11 / 18 段