2. Many of the indispositions, and much of the subsequent weakness of

persons who had been cured by copious blood-letting, have been ascribed

to it. This is so far from being true that the reverse of it has occurred

in many cases. Mr. Mierken worked in his sugar-house, in good health,

nine days after his last bleeding; and Mr. Gribble and Mr. George seemed,

by their appearance, to have derived fresh vigour from their evacuations.

I could mention the names of many people who assured me their

constitutions had been improved by the use of those remedies; and I know

several persons in whom they have carried off habitual complaints. Mr.

Richard Wells attributed his relief from a chronic rheumatism to the

copious bleeding and purging which were used to cure him of the yellow

fever; and Mr. William Young, the bookseller, was relieved of a chronic

pain in his side, by means of the same remedies.

3. It was said, that blood-letting was prescribed indiscriminately in all

cases, without any regard to age, constitution, or the force of the

disease. This is not true, as far as it relates to my practice. In my

prescriptions for patients whom I was unable to visit, I advised them,

when they were incapable of judging of the state of the pulse, to be

guided in the use of bleeding, by the degrees of pain they felt,

particularly in the head; and I seldom advised it for the _first_ time,

after the second or third day of the disease.

In pneumonies which affect whole neighbourhoods in the spring of the

year, bleeding is the universal remedy. Why should it not be equally so,

in a fever which is of a more uniform inflammatory nature, and which

tends more rapidly to effusions, in parts of the body much more vital

than the lungs?

I have before remarked, that the debility which occurs in the beginning

of the yellow fever, arises from a depressed state of the system. The

debility in the plague is of the same nature. It has long been known that

debility from the sudden abstraction of stimuli is to be removed by the

_gradual_ application of stimuli, but it has been less observed, that the

excess of stimulus in the system is best removed in a _gradual_ manner,

and that too in proportion to the degrees of depression, which exist in

the system.

This principle in the animal economy has been acknowledged by the

practice of occasionally stopping the discharge of water from a canula in

tapping, and of blood from a vein, in order to prevent fainting.

Child-birth induces fainting, and sometimes death, only by the _sudden_

abstraction of the stimulus of distention and pain.

In all those cases where purging or bleeding have produced death in the

yellow fever or plague, when they have been used on the first or second

day of those diseases, I suspect that it was occasioned by the quantity

of the stimulus abstracted being disproportioned to the degrees of

depression in the system. The following facts will I hope throw light

upon this subject.

1. Dr. Hodges informs us, that "although blood could not be drawn in the

plague, even in the smallest quantity without danger, yet a _hundred_

times the quantity of fluids was discharged in pus from buboes without

inconvenience[79]."

[79] Page 114.

2. Pareus, after condemning bleeding in the plague, immediately adds an

account of a patient, who was saved by a hæmorrhage from the nose, which

continued _two_ days[80].

[80] Skenkius, lib. vi. p. 881.

3. I have before remarked that bleeding proved fatal in three cases in

the yellow fever, in the month of August; but at that time I saw one, and

heard of another case, in which death seemed to have been prevented by a

bleeding at the nose. Perhaps the uniform good effects which were

observed to follow a spontaneous hæmorrhage from an orifice in the arm,

arose wholly from the _gradual_ manner in which the stimulus of the blood

was in this way abstracted from the body. Dr. Williams relates a case of

the recovery of a gentleman from the yellow fever, by means of small

hæmorrhages, which continued three days, from wounds in his shoulders

made by being cupped. He likewise mentions several other recoveries by

hæmorrhages from the nose, after "a vomiting of black humours and a

hiccup had taken place[81]."

[81] Essay on the Bilious or Yellow Fever of Jamaica, p. 40.

4. There is a disease in North-Carolina, known among the common people by

the name of the "pleurisy in the head." It occurs in the winter, after a

sickly autumn, and seems to be an evanescent symptom of a bilious

remitting fever. The cure of it has been attempted by bleeding, in the

common way, but generally without success. It has, however, yielded to

this remedy in another form, that is, to the discharge of a few ounces of

blood obtained by thrusting a piece of quill up the nose.

5. Riverius describes a pestilential fever which prevailed at

Montpellier, in the year 1623, which carried off one half of all who were

affected by it[82]. After many unsuccessful attempts to cure it, this

judicious physician prescribed the loss of _two_ or _three_ ounces of

blood. The pulse rose with this small evacuation. Three or four hours

afterwards he drew six ounces of blood from his patients, and with the

same good effect. The next day he gave a purge, which, he says, rescued

his patients from the grave. All whom he treated in this manner

recovered. The whole history of this epidemic is highly interesting, from

its agreeing with our late epidemic in so many of its symptoms, more

especially as they appeared in the different states of the pulse.

[82] De Febre Pestilenti, vol. ii. p. 145, 146, and 147.

An old and intelligent citizen of Philadelphia, who remembers the yellow

fever of 1741, says that when it first made its appearance bleeding was

attended with fatal consequences. It was laid aside afterwards, and the

disease prevailed with great mortality until it was checked by the cold

weather. Had blood been drawn in the manner mentioned by Riverius, or had

it been drawn in the usual way, after the abstraction of the stimulus of

heat by the cool weather, the disease might probably have been subdued,

and the remedy of blood-letting thereby have recovered its character.

Dr. Hodges has another remark, in his account of the plague in London in

the year 1665, which is still more to our purpose than the one which I

have quoted from it upon this subject. He says that "bleeding, as a

preventive of the plague, was only safe and useful when the blood was

drawn by a _small_ orifice, and a _small_ quantity taken at _different_

times[83]."

[83] Page 209.

I have remarked, in the history of this fever, that it was often cured on

the first or second day by a copious sweat. The Rev. Mr. Ustick was one

among many whom I could mention, who were saved from a violent attack of

the fever by this evacuation. It would be absurd to suppose that the

miasmata which produced the disease were discharged in this manner from

the body. The sweat seemed to cure the fever only by lessening the

quantity of the fluids, and thus _gradually_ removing the depression of

the system. The profuse sweats which sometimes cure the plague, as well

as the disease which is brought on by the bite of poisonous snakes, seem

to act in the same way.

The system, in certain states of malignant fever, resembles a man

struggling beneath a load of two hundred weight, who is able to lift but

one hundred and seventy-five. In order to assist him it will be to no

purpose to attempt to infuse additional vigour into his muscles by the

use of a whip or of strong drink. Every exertion will serve only to

waste his strength. In this situation (supposing it impossible to divide

the weight which confines him to the ground) let the pockets of this man

be emptied of their contents, and let him be stripped of so much of his

clothing as to reduce his weight five and twenty or thirty pounds. In

this situation he will rise from the ground; but if the weights be

abstracted suddenly, while he is in an act of exertion, he will rise with

a spring that will endanger a second fall, and probably produce a

temporary convulsion in his system. By abstracting the weights from his

body more gradually, he will rise by degrees from the ground, and the

system will accommodate itself in such a manner to the diminution of its

pressure, as to resume its erect form, without the least deviation from

the natural order of its appearance and motions.

It has been said that the stimulating remedies of bark, wine, and the

cold bath, were proper in our late epidemic in August, and in the

beginning of September, but that they were improper afterwards. If my

theory be just, they were more improper in August and the beginning of

September, than they were after the disease put on the outward and common

signs of inflammatory diathesis. The reason why a few strong purges cured

the disease at its first appearance, was, because they abstracted in a

_gradual_ manner some of the immense portion of stimulus under which the

arterial system laboured, and thus gradually relieved it from its low and

weakening degrees of depression. Bleeding was fatal in these cases,

probably because it removed this depression in too sudden a manner.

The principle of the gradual abstraction, as well as of the gradual

application of stimuli to the body, opens a wide field for the

improvement of medicine. Perhaps all the discoveries of future ages will

consist more in a new application of established principles, and in new

modes of exhibiting old medicines, than in the discovery of new theories,

or of new articles of the materia medica.

The reasons which induced me to prescribe purging and bleeding, in so

liberal a manner, naturally led me to recommend _cool_ and _fresh air_ to

my patients. The good effects of it were obvious in almost every case in

which it was applied. It was equally proper whether the arterial system

was depressed, or whether it discovered, in the pulse, a high degree of

morbid excitement. Dr. Griffitts furnished a remarkable instance of the

influence of cool air upon the fever. Upon my visiting him, on the

morning of the 8th of October, I found his pulse so full and tense as to

indicate bleeding, but after sitting a few minutes by his bed-side, I

perceived that the windows of his room had been shut in the night by his

nurse, on account of the coldness of the night air. I desired that they

might be opened. In ten minutes afterwards the doctor's pulse became so

much slower and weaker that I advised the postponement of the bleeding,

and recommended a purge instead of it. The bleeding notwithstanding

became necessary, and was used with great advantage in the afternoon of

the same day.

The cool air was improper only in those cases where a chilliness attended

the disease.

For the same reason that I advised cool air, I directed my patients to

use cold _drinks_. They consisted of lemonade, tamarind, jelly and raw

apple water, toast and water, and of weak balm, and camomile tea. The

subacid drinks were preferred in most cases, as being not only most

agreeable to the taste, but because they tended to compose the stomach.

All these drinks were taken in the early stage of the disease. Towards

the close of it, I permitted the use of porter and water, weak punch, and

when the stomach would bear it, weak wine-whey.

I forbade all cordial and stimulating food in the active state of the

arterial system. The less my patients ate, of even the mildest vegetable

food, the sooner they recovered. Weak coffee, which (as I have formerly

remarked) was almost universally agreeable, and weak tea were always

inoffensive. As the action of the pulse diminished, I indulged my

patients with weak chocolate; also with milk, to which roasted apples, or

minced peaches, and (where they were not to be had), bread or Indian mush

were added.

Towards the crisis, I advised the drinking of weak chicken, veal, or

mutton broth, and after the crisis had taken place, I permitted mild

animal food to be eaten in a small quantity, and to be increased

according to the waste of the excitability of the system. This strict

abstinence which I imposed upon my patients did not escape obloquy; but

the benefits they derived from it, and the ill effects which arose in

many cases from a contrary regimen, satisfied me that it was proper in

every case in which it was prescribed.

_Cold water_ was a most agreeable and powerful remedy in this disease. I

directed it to be applied by means of napkins to the head, and to be

injected into the bowels by way of glyster. It gave the same ease to

both, when in pain, which opium gives to pain from other causes. I

likewise advised the washing of the face and hands, and sometimes the

feet, with cold water, and always with advantage. It was by suffering the

body to lie for some time in a bed of cold water, that the inhabitants of

the island of Massuah cured the most violent bilious fevers[84]. When

applied in this way, it _gradually_ abstracts the heat from the body, and

thereby lessens the action of the system. It differs as much in its

effects upon the body from the cold bath, as rest in a cold room, differs

from exercise in the cold and open air.

[84] Bruce's Travels.

I was first led to the practice of the partial application of cold water

to the body, in fevers of too much force in the arterial system, by

observing its good effects in active hæmorrhages, and by recollecting the

effects of a partial application of warm water to the feet, in fevers of

an opposite character. Cold water when applied to the feet as certainly

reduces the pulse in force and frequency, as warm water, applied in the

same way, produces contrary effects upon it. In an experiment which was

made at my request, by one of my pupils, by placing his feet in cold pump

water for a few minutes, the pulse was reduced 24 strokes in a minute,

and became so small as hardly to be perceptible.

But this effect of cold water, in reducing the frequency of the pulse, is

not uniform. In weak and irritable habits, it increases its frequency.

This has been fully proved by a number of experiments, made by my former

pupil, Dr. Stock, of Bristol, in England, and published in his "Medical

Collections of the Effects of Cold, as a Remedy in certain Diseases[85]."

[85] Page 185.

In the use of the remedies which were necessary to overcome the

inflammatory action of the system, I was obliged to reduce it below its

natural point of excitement. In the present imperfect state of our

knowledge in medicine, perhaps no disease of too much action can be cured

without it.

Besides the remedies which have been mentioned, I was led to employ

another of great efficacy. I had observed a favourable issue of the

fever, in every case in which a spontaneous discharge took place from the

salivary glands. I had observed further, that all such of my patients

(one excepted) as were salivated by the mercurial purges recovered in a

few days. This early suggested an idea to me that the calomel might be

applied to other purposes than the discharging of bile from the bowels. I

ascribed its salutary effects, when it salivated in the first stage of

the disease, to the excitement of inflammation and effusion in the

throat, diverting them from more vital parts of the body. In the second

stage of the disease, I was led to prescribe it as a stimulant, and, with

a view of obtaining this operation from it, I aimed at exciting a

salivation, as speedily as possible, in all cases. Two precedents

encouraged me to make trial of this remedy.

In the month of October, 1789, I attended a gentleman in a bilious fever,

which ended in many of the symptoms of a typhus mitior. In the lowest

state of his fever, he complained of a pain in his right side, for which

I ordered half an ounce of mercurial ointment to be rubbed on the part

affected. The next day, he complained of a sore mouth, and, in the course

of four and twenty hours, he was in a moderate salivation. From this time

his pulse became full and slow, and his skin moist; his sleep and

appetite suddenly returned, and in a day or two he was out of danger. The

second precedent for a salivation in a fever, which occurred to me, was

in Dr. Haller's short account of the works of Dr. Cramer[86]. The

practice was moreover justified, in point of safety, as well as the

probability of success, by the accounts which Dr. Clark has lately given

of the effects of a salivation in the dysentery[87]. I began by

prescribing the calomel in small doses, at short intervals, and

afterwards I directed large quantities of the ointment to be rubbed upon

the limbs. The effects of it, in every case in which it affected the

mouth, were salutary. Dr. Woodhouse improved upon my method of exciting

the salivation, by rubbing the gums with calomel, in the manner directed

by Mr. Clare. It was more speedy in its operation in this way than in any

other, and equally effectual. Several persons appeared to be benefited by

the mercury introduced into the system in the form of an ointment, where

it did _not_ produce a salivation. Among these, were the Rev. Dr.

Blackwell, and Mr. John Davis.

[86] Bibliotheca Medicinæ Practicæ, vol. iii. p. 491.

[87] Diseases of Long Voyages to Hot Climates, vol. ii. p. 334.

Soon after the above account was written of the good effects of a

mercurial salivation in this fever, I had great satisfaction in

discovering that it had been prescribed with equal, and even greater

success, by Dr. Wade in Bengal, in the year 1791, and by Dr. Chisholm in

the island of Granada, in the cure of bilious yellow fevers[88]. Dr. Wade

did not lose one, and Dr. Chisholm lost only one out of forty-eight

patients in whom the mercury affected the salivary glands. The latter

gave 150 grains of calomel, and applied the strongest mercurial ointment

below the groin of each side, in some cases. He adds further, that not a

single instance of a relapse occurred, where the disease was cured by

salivation.

[88] Medical Commentaries, vol. xviii. p. 209, 288.

After the reduction of the system, _blisters_ were applied with great

advantage to every part of the body. They did most service when they were

applied to the crown of the head. I did not see a single case, in which a

mortification followed the sore, which was created by a blister.

Brandy and water, or porter and water, when agreeable to the stomach,

with now and then a cup of chicken broth, were the drinks I prescribed to

assist in restoring the tone of the system.

In some cases I directed the limbs to be wrapped in flannels dipped in

warm spirits, and cataplasms of bruised garlic to be applied to the feet.

But my principal dependence, next to the use of mercurial medicines, for

exciting a healthy action in the arterial system, was upon mild and

gently stimulating food. This consisted of rich broths, the flesh of

poultry, oysters, thick gruel, mush and milk, and chocolate. I directed

my patients to eat or drink a portion of some of the above articles of

diet every hour or two during the day, and in cases of great debility,

from an exhausted state of the system, I advised their being waked for

the same purpose two or three times in the night. The appetite frequently

craved more savoury articles of food, such as beef-stakes and sausages;

but they were permitted with great caution, and never till the system had

been prepared for them by a less stimulating diet.

There were several _symptoms_ which were very distressing in this

disease, and which required a specific treatment.

For the vomiting, with a burning sensation in the stomach, which came on

about the fifth day, I found no remedy equal to a table spoonful of sweet

milk, taken every hour, or to small draughts of milk and water. I was

led to prescribe this simple medicine from having heard, from a

West-India practitioner, and afterwards read, in Dr. Hume's account of

the yellow fever, encomiums upon the milk of the cocoa-nut for this

troublesome symptom. Where sweet milk failed of giving relief, I

prescribed small doses of sweet oil, and in some cases a mixture of equal

parts of milk, sweet oil, and molasses. They were all intended to dilute

or blunt the acrimony of the humours, which were either effused or

generated in the stomach. Where they all failed of checking the vomiting,

I prescribed weak camomile tea, or porter, or cyder and water, with

advantage. In some of my patients the stomach rejected all the mixtures

and liquors which have been mentioned. In such cases I directed the

stomach to be left to itself for a few hours, after which it sometimes

received and retained the drinks that it had before rejected, provided

they were administered in a small quantity at a time.

The vomiting was sometimes stopped by a blister applied to the external

region of the stomach.

A mixture of liquid laudanum and sweet oil, applied to the same place,

gave relief where the stomach was affected by pain only, without a

vomiting.

I have formerly mentioned that a distressing _pain_ often seized the

lower part of the _bowels_. I was early taught that laudanum was not a

proper remedy for it. It yielded in almost every case to two or three

emollient glysters, or to the loss of a few ounces of blood.

The convalescence from this fever was in general rapid, but in some cases

it was very slow. I was more than usually struck by the great resemblance

which the system in the convalescence from this fever bore to the state

of the body and mind in old age. It appeared, 1. In the great weakness of

the body, more especially of the limbs. 2. In uncommon depression of

mind, and in a great aptitude to shed tears. 3. In the absence or short

continuance of sleep. 4. In the frequent occurrence of appetite, and, in

some cases, in its inordinate degrees. And 5. In the loss of the hair of

the head, or in its being suddenly changed in some cases to a grey

colour.

Pure air, gentle exercise, and agreeable society removed the debility

both of body and mind of this premature and temporary old age. I met with

a few cases, in which the yellow colour continued for several weeks

after the patient's recovery from all the other symptoms of the fever. It

was removed most speedily and effectually by two or three moderate doses

of calomel and rhubarb.

A feeble and irregular intermittent was very troublesome in some people,

after an acute attack of the fever. It yielded gradually to camomile or

snake-root tea, and country air.

In a publication, dated the 16th of September, I recommended a diet of

milk and vegetables, and cooling purges to be taken once or twice a week,

to the citizens of Philadelphia. This advice was the result of the theory

of the disease I had adopted, and of the successful practice which had

arisen from it. In my intercourse with my fellow-citizens, I advised this

regimen to be regulated by the degrees of fatigue and foul air to which

they were exposed. I likewise advised moderate blood-letting to all such

persons as were of a plethoric habit. To men whose minds were influenced

by the publications in favour of bark and wine, and who were unable at

that time to grasp the extent and force of the remote cause of this

terrible fever, the idea of dieting, purging, or bleeding the inhabitants

of a whole village or city appeared to be extravagant and absurd: but I

had not only the analogy of the regimen made use of to prepare the body

for the small-pox, but many precedents in favour of the advice. Dr.

Haller has given extracts from the histories of two plagues, in which the

action of the miasmata was prevented or mitigated by bleeding[89]. Dr.

Hodges confirms the utility of the same practice. The benefits of low

diet, as a preventive of the plague, were established by many authors,

long before they received the testimony of the benevolent Mr. Howard in

their favour. Socrates in Athens, and Justinian in Constantinople, were

preserved, by means of their abstemious modes of living, from the plagues

which occasionally ravaged those cities. By means of the low diet, gentle

physic, and occasional bleedings, which I thus publicly recommended, the

disease was prevented in many instances, or rendered mild where it was

taken. But my efforts to prevent the disease in my fellow-citizens did

not end here. I advised them, not only in the public papers, but in my

intercourse with them, to avoid heat, cold, labour, and every thing else

that could excite the miasmata (which I knew to be present in all their

bodies) into action. I forgot, upon this occasion, the usual laws which

regulate the intercourse of man with man in the streets, and upon the

public roads, in my excursions into the neighbourhood of the city. I

cautioned many persons, whom I saw walking or riding in an unsafe manner,

of the danger to which they exposed themselves; and thereby, I hope,

prevented an attack of the disease in many people.

[89] Bibliotheca Medicinæ Practicæ, vol. ii. p. 93. and 387.

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