LETTER III.

Subject of spectral illusions--Recent and interesting case of Mrs.

A.--Her first illusion affecting the ear--Spectral apparition of

her husband--Spectral apparition of a cat--Apparition of a near and

living relation in grave-clothes, seen in a looking-glass--Other

illusions, affecting the ear--Spectre of a deceased friend

sitting in an easy-chair--Spectre of a coach-and-four filled with

skeletons--Accuracy and value of the preceding cases--State of health

under which they arose--Spectral apparitions are pictures on the

retina--The ideas of memory and imagination are also pictures on the

retina--General views of the subject--Approximate explanation of

spectral apparitions.

The preceding account of the different sources of illusion to which the

eye is subject is not only useful as indicating the probable cause of

any individual deception, but it has a special importance in preparing

the mind for understanding those more vivid and permanent spectral

illusions to which some individuals have been either occasionally or

habitually subject.

In these lesser phenomena, we find the retina so powerfully influenced

by external impressions, as to retain the view of visible objects

long after they are withdrawn: we observe it to be so excited by

local pressures of which we sometimes know neither the nature nor the

origin, as to see in total darkness moving and shapeless masses of

coloured light; and we find, as in the case of Sir Isaac Newton, and

others, that the imagination has the power of reviving the impressions

of highly luminous objects, months and even years after they were

first made. From such phenomena, the mind feels it to be no violent

transition to pass to those spectral illusions which, in particular

states of health, have haunted the most intelligent individuals, not

only in the broad light of day, but in the very heart of the social

circle.

This curious subject has been so ably and fully treated in your

Letters on Demonology, that it would be presumptuous in me to resume

any part of it on which you have even touched; but as it forms a

necessary branch of a Treatise on Natural Magic, and as one of the most

remarkable cases on record has come within my own knowledge, I shall

make no apology for giving a full account of the different spectral

appearances which it embraces, and of adding the results of a series of

observations and experiments on which I have been long occupied, with

the view of throwing some light on this remarkable class of phenomena.

A few years ago, I had occasion to spend some days under the same roof

with the lady to whose case I have above referred. At that time she

had seen no spectral illusions, and was acquainted with the subject

only from the interesting volume of Dr. Hibbert. In conversing with

her about the cause of these apparitions, I mentioned, that if she

should ever see such a thing, she might distinguish a genuine ghost,

existing externally, and seen as an external object, from one created

by the mind, by merely pressing one eye or straining them both, so

as to see objects double; for in this case the external object or

supposed apparition would invariably be doubled, while the impression

on the retina created by the mind would remain single. This observation

recurred to her mind when she unfortunately became subject to the same

illusions; but she was too well acquainted with their nature to require

any such evidence of their mental origin; and the state of agitation

which generally accompanies them seems to have prevented her from

making the experiment as a matter of curiosity.

1. The first illusion to which Mrs. A. was subject was one which

affected only the ear. On the 26th of December, 1830, about half-past

four in the afternoon, she was standing near the fire in the hall,

and on the point of going up stairs to dress, when she heard, as she

supposed, her husband’s voice calling her by name, “---- Come here!

come to me!” She imagined that he was calling at the door to have it

opened, but upon going there and opening the door she was surprised to

find no person there. Upon returning to the fire, she again heard the

same voice calling out very distinctly and loudly, “---- Come, come

here!” She then opened two doors of the same room, and upon seeing no

person she returned to the fire-place. After a few moments she heard

the same voice still calling, “---- ---- Come to me, come! come away!”

in a loud, plaintive, and somewhat impatient tone. She answered as

loudly, “Where are you? I don’t know where you are;” still imagining

that he was somewhere in search of her: but receiving no answer, she

shortly went up stairs. On Mr. A.’s return to the house, about half an

hour afterwards, she inquired why he called to her so often, and where

he was; and she was, of course, greatly surprised to learn that he had

not been near the house at the time. A similar illusion, which excited

no particular notice at the time, occurred to Mrs. A. when residing at

Florence about ten years before, and when she was in perfect health.

When she was undressing after a ball, she heard a voice call her

repeatedly by name, and she was at that time unable to account for it.

2. The next illusion which occurred to Mrs. A. was of a more alarming

character. On the 30th of December, about four o’clock in the

afternoon, Mrs. A. came down stairs into the drawing-room, which she

had quitted only a few minutes before, and on entering the room she

saw her husband, as she supposed, standing with his back to the fire.

As he had gone out to take a walk about half an hour before, she was

surprised to see him there, and asked him why he had returned so

soon. The figure looked fixedly at her with a serious and thoughtful

expression of countenance, but did not speak. Supposing that his mind

was absorbed in thought, she sat down in an arm-chair near the fire,

and within two feet at most of the figure, which she still saw standing

before her. As its eyes, however, still continued to be fixed upon her,

she said, after the lapse of a few minutes, “Why don’t you speak,----?”

The figure immediately moved off towards the window at the further end

of the room, with its eyes still gazing on her, and it passed so very

close to her in doing so, that she was struck by the circumstance of

hearing no step nor sound, nor feeling her clothes brushed against,

nor even any agitation in the air. Although she was now convinced that

the figure was not her husband, yet she never for a moment supposed

that it was anything supernatural, and was soon convinced that it was

a spectral illusion. As soon as this conviction had established itself

in her mind, she recollected the experiment which I had suggested, of

trying to double the object: but before she was able distinctly to do

this, the figure had retreated to the window, where it disappeared.

Mrs. A. immediately followed it, shook the curtains and examined the

window, the impression having been so distinct and forcible that she

was unwilling to believe that it was not a reality. Finding, however,

that the figure had no natural means of escape, she was convinced that

she had seen a spectral apparition like those recorded in Dr. Hibbert’s

work, and she consequently felt no alarm or agitation. The appearance

was seen in bright daylight, and lasted four or five minutes. When the

figure stood close to her it concealed the real objects behind it, and

the apparition was fully as vivid as the reality.

3. On these two occasions Mrs. A. was alone, but when the next phantasm

appeared her husband was present. This took place on the 4th of

January, 1830. About ten o’clock at night, when Mr. and Mrs. A. were

sitting in the drawing-room, Mr. A. took up the poker to stir the fire,

and when he was in the act of doing this, Mrs. A. exclaimed, “Why

there’s the cat in the room!” “Where?” asked Mr. A. “There, close to

you,” she replied. “Where?” he repeated. “Why on the rug, to be sure,

between yourself and the coal-scuttle.” Mr. A., who had still the

poker in his hand, pushed it in the direction mentioned: “Take care,”

cried Mrs. A., “take care, you are hitting her with the poker.” Mr.

A. again asked her to point out exactly where she saw the cat. She

replied, ”Why sitting up there close to your feet on the rug. She is

looking at me. It is Kitty--come here, Kitty!”--There were two cats

in the house, one of which went by this name, and they were rarely if

ever in the drawing-room. At this time Mrs. A. had no idea that the

sight of the cat was an illusion. When she was asked to touch it, she

got up for the purpose, and seemed as if she were pursuing something

which moved away. She followed a few steps, and then said, “It has gone

under the chair.” Mr. A. assured her it was an illusion, but she would

not believe it. He then lifted up the chair, and Mrs. A. saw nothing

more of it. The room was then searched all over, and nothing found in

it. There was a dog lying on the hearth, who would have betrayed great

uneasiness if a cat had been in the room, but he lay perfectly quiet.

In order to be quite certain, Mr. A. rang the bell, and sent for the

two cats, both of which were found in the housekeeper’s room.

4. About a month after this occurrence, Mrs. A., who had taken a

somewhat fatiguing drive during the day, was preparing to go to bed

about eleven o’clock at night, and, sitting before the dressing-glass,

was occupied in arranging her hair. She was in a listless and drowsy

state of mind, but fully awake. When her fingers were in active motion

among the papillotes, she was suddenly startled by seeing in the

mirror the figure of a near relation, who was then in Scotland and in

perfect health. The apparition appeared over her left shoulder, and

its eyes met hers in the glass. It was enveloped in grave-clothes,

closely pinned, as is usual with corpses, round the head, and under

the chin, and though the eyes were open, the features were solemn and

rigid. The dress was evidently a shroud, as Mrs. A. remarked even the

punctured pattern usually worked in a peculiar manner round the edges

of that garment. Mrs. A. described herself as at the time sensible of

a feeling like what we conceive of fascination, compelling her for a

time to gaze on this melancholy apparition, which was as distinct and

vivid as any reflected reality could be, the light of the candles upon

the dressing-table appearing to shine fully upon its face. After a few

minutes, she turned round to look for the reality of the form over her

shoulder; but it was not visible, and it had also disappeared from the

glass when she looked again in that direction.

5. In the beginning of March, when Mr. A. had been about a fortnight

from home, Mrs. A. frequently heard him moving near her. Nearly every

night, as she lay awake, she distinctly heard sounds like his breathing

hard on the pillow by her side, and other sounds such as he might make

while turning in bed.

6. On another occasion, during Mr. A.’s absence, while riding with

a neighbour, Mr.----, she heard his voice frequently as if he were

riding by his side. She heard also the tramp of his horse’s feet, and

was almost puzzled by hearing him address her at the same time with

the person really in company. His voice made remarks on the scenery,

improvements, &c., such as he probably should have done had he been

present. On this occasion, however, there was no visible apparition.

7. On the 17th March, Mrs. A. was preparing for bed. She had dismissed

her maid, and was sitting with her feet in hot water. Having an

excellent memory, she had been thinking upon and repeating to herself

a striking passage in the Edinburgh Review, when on raising her eyes,

she saw seated in a large easy-chair before her the figure of a

deceased friend, the sister of Mr. A. The figure was dressed as had

been usual with her, with great neatness, but in a gown of a peculiar

kind, such as Mrs. A. had never seen her wear, but exactly such as had

been described to her by a common friend as having been worn by Mr.

A.’s sister during her last visit to England. Mrs. A. paid particular

attention to the dress, air, and appearance of the figure, which sat

in an easy attitude in the chair, holding a handkerchief in one hand.

Mrs. A. tried to speak to it, but experienced a difficulty in doing

so; and in about three minutes the figure disappeared. About a minute

afterwards, Mr. A. came into the room, and found Mrs. A. slightly

nervous, but fully aware of the delusive nature of the apparition. She

described it as having all the vivid colouring and apparent reality

of life; and for some hours preceding this and other visions, she

experienced a peculiar sensation in her eyes, which seemed to be

relieved when the vision had ceased.

8. On the 5th October, between one and two o’clock in the morning, Mr.

A. was awoke by Mrs. A., who told him that she had just seen the figure

of his deceased mother draw aside the bedcurtains and appear between

them. The dress and the look of the apparition were precisely those in

which Mr. A.’s mother had been last seen by Mrs. A. at Paris, in 1824.

9. On the 11th October, when sitting in the drawing-room, on one side

of the fire-place, she saw the figure of another deceased friend

moving towards her from the window at the further end of the room. It

approached the fire-place, and sat down in the chair opposite. As there

were several persons in the room at the time, she describes the idea

uppermost in her mind to have been a fear lest they should be alarmed

at her staring, in the way she was conscious of doing, at vacancy, and

should fancy her intellect disordered. Under the influence of this

fear, and recollecting a story of a similar effect in your work on

Demonology, which she had lately read, she summoned up the requisite

resolution to enable her to cross the space before the fire-place, and

seat herself in the same chair with the figure. The apparition remained

perfectly distinct till she sat down, as it were, in its lap, when it

vanished.

10. On the 26th of the same month, about two P.M., Mrs.

A. was sitting in a chair by the window in the same room with her

husband. He heard her exclaim--”What have I seen?” And on looking at

her, he observed a strange expression in her eyes and countenance.

A carriage-and-four had appeared to her to be driving up the

entrance-road to the house. As it approached, she felt inclined to

go up stairs to prepare to receive company, but, as if spellbound,

she was unable to move or speak. The carriage approached, and as it

arrived within a few yards of the window, she saw the figures of

the postilions and the persons inside take the ghastly appearance of

skeletons and other hideous figures. The whole then vanished entirely,

when she uttered the above-mentioned exclamation.

11. On the morning of the 30th October, when Mrs. A. was sitting in her

own room with a favourite dog in her lap, she distinctly saw the same

dog moving about the room during the space of about a minute or rather

more.

12. On the 3rd December, about nine P.M., when Mr. and Mrs. A. were

sitting near each other in the drawing-room occupied in reading, Mr.

A. felt a pressure on his foot. On looking up he observed Mrs. A.’s

eyes fixed with a strong and unnatural stare on a chair about nine

or ten feet distant. Upon asking her what she saw, the expression of

her countenance changed, and upon recovering herself, she told Mr. A.

that she had seen his brother, who was alive and well at the moment in

London, seated in the opposite chair, but dressed in grave-clothes, and

with a ghastly countenance, as if scarcely alive.

Such is a brief account of the various spectral illusions observed by

Mrs. A. In describing them I have used the very words employed by her

husband in his communications to me on the subject;[5] and the reader

may be assured that the descriptions are neither heightened by fancy,

nor amplified by invention. The high character and intelligence of

the lady, and the station of her husband in society, and as a man of

learning and science, would authenticate the most marvellous narrative,

and satisfy the most scrupulous mind, that the case has been

philosophically as well as faithfully described. In narrating events

which we regard as of a supernatural character, the mind has a strong

tendency to give more prominence to what appears to itself the most

wonderful; but from the very same cause, when we describe extraordinary

and inexplicable phenomena which we believe to be the result of natural

causes, the mind is prone to strip them of their most marvellous

points, and bring them down to the level of ordinary events. From the

very commencement of the spectral illusions seen by Mrs. A., both she

and her husband were well aware of their nature and origin, and both

of them paid the most minute attention to the circumstances which

accompanied them, not only with the view of throwing light upon so

curious a subject, but for the purpose of ascertaining their connection

with the state of health under which they appeared.

[5] _Edinburgh Journal of Science_, New Series, No. iv. pp. 218, 219,

No. vi., p. 244, and No. viii., p. 261.

As the spectres seen by Nicolai and others had their origin in bodily

indisposition, it becomes interesting to learn the state of Mrs. A.’s

health when she was under the influence of these illusions. During the

six weeks within which the first three illusions took place, she had

been considerably reduced and weakened by a troublesome cough, and the

weakness which this occasioned was increased by her being prevented

from taking a daily tonic. Her general health had not been strong,

and long experience has put it beyond a doubt, that her indisposition

arises from a disordered state of the digestive organs. Mrs. A. has

naturally a morbidly sensitive imagination, which so painfully affects

her corporeal impressions, that the account of any person having

suffered severe pain by accident or otherwise, occasionally produces

acute twinges of pain in the corresponding parts of her person. The

account, for example, of the amputation of an arm will produce an

instantaneous and severe sense of pain in her own arm. She is subject

to talk in her sleep with great fluency, to repeat long passages of

poetry, particularly when she is unwell, and even to cap verses for

half an hour together, never failing to quote lines beginning with the

final letter of the preceding one till her memory is exhausted.

Although it is not probable that we shall ever be able to understand

the actual manner in which a person of sound mind beholds spectral

apparitions in the broad light of day, yet we may arrive at such a

degree of knowledge on the subject as to satisfy rational curiosity,

and to strip the phenomena of every attribute of the marvellous.

Even the vision of natural objects presents to us insurmountable

difficulties, if we seek to understand the precise part which the mind

performs in perceiving them; but the philosopher considers that he has

given a satisfactory explanation of vision, when he demonstrates that

distinct pictures of external objects are painted on the retina, and

that this membrane communicates with the brain by means of nerves of

the same substance as itself, and of which it is merely an expansion.

Here we reach the gulf which human intelligence cannot pass; and if the

presumptuous mind of man shall dare to extend its speculations farther,

it will do it only to evince its incapacity and mortify its pride.

In his admirable work on this subject, Dr. Hibbert has shown that

spectral apparitions are nothing more than ideas or the recollected

images of the mind, which, in certain states of bodily indisposition,

have been rendered more vivid than actual impression, or, to use other

words, that the pictures in the “mind’s eye” are more vivid than the

pictures in the body’s eye. This principle has been placed by Dr.

Hibbert beyond the reach of doubt; but I propose to go much farther,

and to show that the “mind’s eye” is actually the body’s eye, and that

the retina is the common tablet on which both classes of impressions

are painted, and by means of which they receive their visual existence

according to the same optical laws. Nor is this true merely in the

case of spectral illusions; it holds good of all ideas recalled by

the memory or created by the imagination, and may be regarded as a

fundamental law in the science of pneumatology.

It would be out of place in a work like this to adduce the experimental

evidence on which it rests, or even to explain the manner in which the

experiments themselves must be conducted: but I may state in general,

that the spectres conjured up by the memory or the fancy have always

a “local habitation,” and that they appear in front of the eye, and

partake in its movements exactly like the impressions of luminous

objects, after the objects themselves are withdrawn.

In the healthy state of the mind and body, the relative intensity of

these two classes of impressions on the retina is nicely adjusted. The

mental pictures are transient and comparatively feeble, and in ordinary

temperaments are never capable of disturbing or effacing the direct

images of visible objects. The affairs of life could not be carried on

if the memory were to intrude bright representations of the past into

the domestic scene, or scatter them over the external landscape. The

two opposite impressions, indeed, could not co-exist: the same nervous

fibre which is carrying from the brain to the retina the figures of

memory, could not at the same instant be carrying back the impressions

of external objects from the retina to the brain. The mind cannot

perform two different functions at the same instant, and the direction

of its attention to one of the two classes of impressions necessarily

produces the extinction of the other: but so rapid is the exercise

of mental power, that the alternate appearance and disappearance

of the two contending impressions are no more recognized than the

successive observations of external objects during the twinkling of

the eyelids. If we look for example at the façade of St. Paul’s, and

without changing our position call to mind the celebrated view of

Mont Blanc from Lyons, the picture of the cathedral, though actually

impressed upon the retina, is momentarily lost sight of by the mind,

exactly like an object seen by indirect vision; and during the instant

the recollected image of the mountain, towering over the subjacent

range, is distinctly seen, but in a tone of subdued colouring and

indistinct outline. When the purpose of its recall is answered, it

quickly disappears, and the picture of the cathedral again resumes the

ascendancy.

In darkness and solitude, when external objects no longer interfere

with the pictures of the mind, they become more vivid and distinct;

and in the state between waking and sleeping the intensity of the

impressions approaches to that of visible objects. With persons of

studious habits, who are much occupied with the operations of their

own minds, the mental pictures are much more distinct than in ordinary

persons; and in the midst of abstract thought, external objects even

cease to make any impression on the retina. A philosopher absorbed in

his contemplations experiences a temporary privation of the use of

his senses. His children or his servants will enter the room directly

before his eyes without being seen. They will speak to him without

being heard; and they will even try to rouse him from his reverie

without being felt; although his eyes, his ears, and his nerves

actually receive the impressions of light, sound, and touch. In such

cases, however, the philosopher is voluntarily pursuing a train of

thought on which his mind is deeply interested; but even ordinary

men, not much addicted to speculations of any kind, often perceive in

their mind’s eye the pictures of deceased or absent friends, or even

ludicrous creations of fancy, which have no connexion whatever with the

train of their thoughts. Like spectral apparitions they are entirely

involuntary, and though they may have sprung from a regular series of

associations, yet it is frequently impossible to discover a single link

in the chain.

If it be true, then, that the pictures of the mind and spectral

illusions are equally impressions upon the retina, the latter will

differ in no respect from the former, but in the degree of vividness

with which they are seen; and those frightful apparitions become

nothing more than our ordinary ideas, rendered more brilliant by some

accidental and temporary derangement of the vital functions. Their

very vividness, too, which is their only characteristic, is capable

of explanation. I have already shown that the retina is rendered

more sensible to light by voluntary local pressure, as well as by

the involuntary pressure of the blood-vessels behind it; and if, by

looking at the sun, we impress upon the retina a coloured image of that

luminary, which is seen even when the eye is shut, we may by pressure

alter the colour of that image, in consequence of having increased the

sensibility of that part of the retina on which it is impressed. Hence

we may readily understand how the vividness of the mental pictures must

be increased by analogous causes.

In the case both of Nicolai and Mrs. A. the immediate cause of the

spectres was a deranged action of the stomach. When such a derangement

is induced by poison, or by substances which act as poisons, the retina

is peculiarly affected, and the phenomena of vision are singularly

changed. Dr. Patouillet has described the case of a family of _nine_

persons who were all driven mad by eating the root of the _hyoscyamus

niger_, or black henbane. One of them leapt into a pond, another

exclaimed that his neighbour would lose a cow in a month, and a third

vociferated that the crown piece of sixty pence would in a short time

rise to five livres. On the following day they had all recovered their

senses, but recollected nothing of what had happened. On the same day

they all saw objects double, and, what is still more remarkable, on

the third day _every object appeared to them as red as scarlet_. Now

this red light was probably nothing more than the red phosphorescence

produced by the pressure of the blood-vessels on the retina, and

analogous to the masses of _blue_, _green_, _yellow_, and _red_ light,

which have been already mentioned as produced by a similar pressure in

headaches, arising from a disordered state of the digestive organs.

Were we to analyse the various phenomena of spectral illusions, we

should discover many circumstances favourable to these views. In those

seen by Nicolai, the individual figures were always somewhat paler than

natural objects. They sometimes grew more and more indistinct, and

became perfectly white; and, to use his own words, “he could always

distinguish with the greatest precision phantasms from phenomena.”

Nicolai sometimes saw the spectres when his eyes were shut, and

sometimes they were thus made to disappear,--effects perfectly

identical with those which arise from the impressions of very luminous

objects. Sometimes the figures vanished entirely, and at other times

only pieces of them disappeared, exactly conformable to what takes

place with objects seen by indirect vision, which most of those figures

must necessarily have been.

Among the peculiarities of spectral illusions, there is one which

merits particular attention, namely, that they seem to cover or conceal

objects immediately beyond them. It is this circumstance more than any

other which gives them the character of reality, and at first sight it

seems difficult of explanation. The distinctness of any impression on

the retina is entirely independent of the accommodation of the eye

to the distinct vision of external objects. When the eye is at rest,

and is not accommodated to objects at any particular distance, it is

in a state for seeing distant objects most perfectly. When a distinct

spectral impression, therefore, is before it, all other objects in its

vicinity will be seen indistinctly, for while the eye is engrossed with

the vision, it is not likely to accommodate itself to any other object

in the same direction. It is quite common, too, for the eye to see only

one of two objects actually presented to it. A sportsman who has been

in the practice of shooting with both his eyes open, actually sees a

double image of the muzzle of his fowling-piece, though it is only

with one of these images that he covers his game, having no perception

whatever of the other. But there is still another principle upon which

only one of two objects may be seen at a time. If we look very steadily

and continuously at a double pattern, such as those on a carpet

composed of two single patterns of different colours, suppose _red_ and

_yellow_; and if we direct the mind particularly to the contemplation

of the red one, the green pattern will sometimes vanish entirely,

leaving the red alone visible; and by the same process the red one may

be made to disappear. In this case, however, the two patterns, like

the two images, may be seen together; but if the very same portion of

the retina is excited by the direct rays of an external object, when

it is excited by a mental impression, it can no more see them both

at the same time, than a vibrating string can give out two different

fundamental sounds. It is quite possible, however, that the brightest

parts of a spectral figure may be distinctly seen along with the

brightest parts of an object immediately behind it, but then the bright

parts of each object will fall upon different parts of the retina.

These views are illustrated by a case mentioned by Dr. Abercrombie. A

gentleman, who was a patient of his, of an irritable habit, and liable

to a variety of uneasy sensations in his head, was sitting alone in his

dining-room in the twilight, when the door of the room was a little

open. He saw distinctly a female figure enter, wrapped in a mantle,

with the face concealed by a large black bonnet. She seemed to advance

a few steps towards him, and then stop. He had a full conviction that

the figure was an illusion of vision, and he amused himself for some

time by watching it; at the same time observing that he could see

through the figure so as to perceive the lock of the door, and other

objects behind it.[6]

[6] Inquiries concerning the Intellectual Powers, and the

Investigation of Truth. Edinburgh, 1830.

If these views be correct, the phenomena of spectral apparitions

are stripped of all their terror, whether we view them in their

supernatural character, or as indications of bodily indisposition.

Nicolai, even, in whose case they were accompanied with alarming

symptoms, derived pleasure from the contemplation of them, and he

not only recovered from the complaint in which they originated, but

survived them for many years.--Mrs. A., too, who sees them only at

distant intervals, and with whom they have but a fleeting existence,

will, we trust, soon lose her exclusive privilege, when the slight

indisposition which gives them birth has subsided.

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