The proportion of the enumerated insane in asylums was—District of

Columbia, 90.6 per cent.; Connecticut, 39; Georgia, 36.8; Maryland,

49.1; Massachusetts, 60.1; New Hampshire, 27.1; New Jersey, 67.8; New

York, 57.2; North Carolina, 13.2; Pennsylvania, 36.1; Rhode Island,

57.3; South Carolina, 38.2; Virginia, 45.5; Vermont, 44.7; Kentucky,

50.7; Tennessee, 16; Ohio, 48; Louisiana, 44.9; Indiana, 26;

Mississippi, 33.7; Illinois, 42.7; Alabama, 24.5; Maine, 26.1;

Missouri, 40.7; Michigan, 41.5; Florida, 30; Texas, 22.3; Iowa, 37.8;

Wisconsin, 48.6; California, 80.3; Minnesota, 61.8; Oregon, 65.5;

Kansas, 31.9; West Virginia, 40.1; Nebraska, 38; Colorado, 34.3. In

Arkansas and in Nevada there was no insane asylum in 1880, and in

Delaware the insane were sent to a Pennsylvania asylum or to the

almshouse. In the Territories the provisions for the insane are very

incomplete.

The statistics just given indicate an enormous increase in the numbers

of the insane who become a public charge, and the figures gathered

from all countries prove conclusively that more insane people are

known to be in existence proportionately to the population from decade

to decade. The question naturally arises, Is insanity increasing as

fast as appears at first sight to be the case, or is the increase

apparent rather than real?

In the first place, the definition of insanity has so widened of later

years as to include vastly greater numbers of the population than

hitherto. The nice adjustment of social relations in a high order of

civilization and greater medical skill make insanity easier of

detection. Large numbers of persons now confined would have been

considered far from being fit subjects for insane asylums a half

century ago. Again, it is hardly a generation ago that we began taking

proper care of the insane. Some States have hardly commenced yet, and

even in the oldest parts of our country many of unsound mind are kept

neglected and squalid in town almshouses or county jails. Wherever

humanity has demanded improved accommodations for the insane they have

accumulated enormously, from the simple fact that they are protected

like children, and kept from dying of neglect, suicide, and

exhaustion. In other words, science and humanity have prolonged their

lives of illness, in some cases to as much as tenfold their natural

length if they had been left to themselves, even where nothing can be

done but to prolong their misery. The {113} more intelligent views now

held of insanity as a physical disease rather than a family disgrace

have led people to be less backward in reporting their insane

relatives as such, while the increasing number of insane asylums and

the growing confidence in them have brought many of the insane to

notice who formerly would have been concealed in attics and cellars

and never mentioned.

Whether or not more persons become insane each year in proportion to

the population we have no methods of determining statistically. The

mortality returns in Massachusetts for the last five census years show

that the deaths from insanity, paralysis, apoplexy, softening of the

brain, and unspecified diseases of the brain, including cephalitis,

were 12.06 per 10,000 inhabitants in 1860, 14.39 in 1865, 14.95 in

1870, 16.42 in 1875, and 17 in 1880; which would probably indicate an

increase, even after allowing for a considerable source of error due

to inaccurate diagnoses, imperfect registration, and the influx of a

large foreign population. It is claimed that the table on page 111

indicates a direct importation of insane persons from Europe. It is

certainly a curious fact that the proportion of idiots and of the

insane differs so little in the native population, and that among

foreigners the idiots, who could not easily be sent here without being

detected and sent back, are less than one-sixth of the number of their

insane. But it is also true that the amount of insanity among

strangers in a foreign land would naturally be greater than among

those who are at home.

The prevalence of insanity as compared with other diseases at the

present time may be fairly estimated from the statistics of

Massachusetts for twenty years, where there were 604,677 deaths

reported, including 2145 from suicide, 1995 from insanity, 1838 from

delirium tremens and intemperance. The reported deaths from pulmonary

consumption are fifty times as many as from insanity; from diarrhœal

diseases, thirty times; from pneumonia, twenty times; from diphtheria,

including croup, fifteen times; from scarlet fever, heart disease, and

typhoid fever, each eleven times; from accidents, ten times; from

cancer, five times; from childbirth and measles, each more than twice

as many. The average death-rates reported from insanity per 100,000

inhabitants were 6.24 from 1861-70, and 7.12 from 1871-80, whereas the

increase in the number of admissions to Massachusetts insane asylums

in the twenty years was from 846 to 1610. The total number of insane

people living in the State is less than the number of consumptives

dying each year, and far less than the number of syphilitics.

CAUSATION.—It is clear that only a small proportion of the human race

is liable to become insane, and one can only wonder that so few brains

are overthrown by the multiplicity of causes in modern life which tend

to disturb those “invisible thoroughfares of the mind which are the

first lurking-places of anguish, mania, and crime.” When we come to

investigate the causes of mental disease, we find that they are of two

kinds—remote or predisposing and immediate or exciting. They are also

moral or mental and physical.

Among the predisposing causes heredity includes nearly or quite 75 per

cent. of all cases, and is easily first; in considering which not only

the immediate parents are to be taken into account, but also the

collateral branches, grandparents, uncles, aunts, sisters, brothers,

and cousins, for {114} hereditary insanity often skips one generation,

and even appears, sometimes, first in the child, then later in the

parent. An insane parent may have several children, of whom some may

be exposed to the exciting causes of insanity and become insane,

transmitting their disease, intensified or not, to their children,

while others may avoid the exciting causes of mental disease, escape

insanity, but yet transmit to their children a temperament

predisposing them to disorder of the mind, which becomes the

starting-point for actual mental disease as soon as the exciting

causes are sufficient to develop the taint. If the exciting causes do

not appear, however, in that generation, and wise marriages are made,

the stock returns to the normal healthy standard and the disease

disappears from the family. The same form of disease, too, is

frequently not transmitted from parent to child or grandchild, but the

neuroses, the psychoneuroses, and the cerebro-psychoses, the

degenerative forms and the developed forms, are interchangeable. In

the ancestry of insanity we find not only actual cerebro-mental

disease, but epilepsy, brain disease due to syphilis, habitual

drunkenness, any of the severe neuroses, apoplexy, pulmonary

consumption, a closely-allied disease, and suicide. Very often the

patient's friends think that there is no hereditary predisposition to

mental disease, when the physician trained to study such cases would

discover so strong a taint that he would not expect all of several

children to escape insanity or some of its allied diseases even in a

case where there had not been actual insanity in the family for

several generations. For instance, where one parent is habitually

using alcoholic liquors to such a degree as never to be drunk, and yet

rarely quite himself, with the other a sufferer from one of the severe

neuroses or cerebral diseases, a single child from such a marriage

might stand a fair chance of inheriting and retaining mental health,

but if several children should be born the chances that all would

escape mental disorder are few. Again, if one parent were the victim

of that intense intellectual strain and moral perversion so often seen

in the eager pursuit of position and wealth, and the other, straining

to keep up in the race, died early of pulmonary consumption, if there

had been in the family cases of convulsions, chorea, apoplexy, or

suicide, and if some member were hysterical or, without sufficient

external cause, unreasonable, anxious, irritable, full of baseless

fears, there might have been no insanity in the family, and yet a

tendency to insanity might be transmitted to a considerable proportion

of the offspring. On the other hand, the existence of a number of

cases of insanity in a family may be due to external or accidental

causes, and not indicate any general taint.

It is true that there are families in which insanity occurs where the

allied neuroses do not often appear, and that various diseases of the

nervous system may be frequent in a stock in which insanity is rare or

absent. A person who has recovered from an acute attack of

cerebro-mental disorder, if previously healthy and without hereditary

predisposition to such diseases, may marry and not transmit to

offspring either insanity or any of its allied diseases, while it is

not uncommon for an individual seemingly the least liable to mental

disease of a whole family to become insane, leaving several brothers

and sisters with ill-balanced minds to get through life without

breaking down, the morbid energy in the latter case expending itself

in irregularities of conduct and of mental operations as fast as it is

created, instead of being stored up for {115} occasional outbreaks.

The degree to which insanity may be expected to follow any given

antecedents can only be estimated very approximately, as the laws of

heredity are very little known, and as there is a tendency in nature,

so strong that it is constantly asserting itself, to return to the

healthy type if it has a chance. But, in general, it may be said that

the more individuals of both branches in whom insanity and its allied

diseases are found, just so far may a larger proportion of the

children be expected to suffer. The character of the particular

disease or tendency to disease which is likely to develop from any

given antecedents is still a very obscure matter. But the case is

often clear enough to justify the remark that if childhood has any

rights it has the right to be born healthy.

It must be admitted that geniuses and men of extraordinary talent

appear in families tainted with insanity, and, indeed, that

comparatively few families have had distinguished men among them for

several generations without also showing a considerable number of

insane members. Schopenhauer, “mad Jack Byron's son,” and Johnson—who

said that his inheritance made him mad all his life—are conspicuous

examples of this well-known fact; and it is also observed that

children and grandchildren of men distinguished for their great

intellectual powers are subjects of degenerative mental disorders, or

at least are of less than ordinary mental capacity and moral force.

The sound and the unsound, too, may exist together in the same mind,

each acting in certain ways independently of the other, and

cerebro-mental disease not seldom, occurs in persons of the highest

intellectual attainments. Dean Swift, with his delusion that parts of

his body were made of glass; Bishop Butler, tormented all his life by

his morbid fancies; Chatterton, committing suicide in an attic;

Rousseau, Tasso, Pascal, Comte, Beethoven, Charles Lamb, John Bunyan,

the author of _Rab and His Friends_, Schumann, Shelley, Cowper,

Swedenborg, and the epileptics Julius Cæsar, Mohammed, and

Napoleon,—are only a few of the many illustrations of this law. In the

descending scale from insanity we find also crime, drunkenness, and

all sorts of moral perversions, which may be its antecedents also.

Even a man's self-indulgences may be intensified as mental or moral

degeneration in his children. The degenerative processes may go on

where there is intellectual stagnation in small communities, with the

vices of civilization, as well as in the crowd, producing a large

class of persons for whom doctors have only compassion, considering

them as invalids although treated as responsible by law and society.

It is difficult to estimate the influence of intermarriage as

predisposing to insanity. The history of the early Ptolemies, of

numerous savage or uncivilized races, and of many selected cases in

the enlightened world may be quoted to show that it is often attended

with no evil results; and there are other causes of degeneration in

the royal families and aristocracies of Europe and in the cases of

individuals where intermarriage of relations has resulted in

deterioration of stock. It is, at all events, certain that marriages

may be made so as to intensify morbid tendencies or so as to eliminate

them—to produce a race of clear heads with sober judgment, or a race

part of whom shall be great sufferers from neuralgia or mental pain;

another part ill-balanced or explorers in fields of thought and action

never tried by calmer intellects, perhaps with now and then at {116}

long intervals a genius; a third part morbid and brilliant or stupid

and imbecile; and still a fourth part near enough to the normal

standard of mental health.

Undoubtedly, a great portion of the mental and nervous disorder

commonly attributed to heredity is largely caused or aggravated by

imitation and by vicious training of children. Schopenhauer says that

the normal man is two-thirds will and one-third intellect—in other

words, two-thirds made by education and one-third by inheritance. The

intellect is often trained so as to enfeeble the will as well as to

hinder the development of the physical man. Self-culture may so

degenerate into self-indulgence as to destroy individuality and force;

and mental health, as a rule, depends upon bodily health and the

exercise of self-control.

In the uncivilized and half-civilized races of the world insanity is

rare; in the early civilizations the insane perished from neglect,

were hanged and burned, starved and died in famine and pestilence, and

fell among the foremost in war. Some of the tribes of North American

Indians shoot the insane, considering them possessed of evil spirits,

while their white neighbors keep them in chains and squalor.

Civilization brings better food, clothing, and shelter, and less

danger from war, famine, and pestilence than savage or mediæval times.

In the struggle for existence, however, physical strength no longer

wholly wins the day, but also those faculties that involve great

mental and bodily strain in mines, factories, crowded tenements,

counting-rooms, offices; in the eager, excited over-study for prizes

or rank in overheated, badly-ventilated schools, and, indeed, in every

walk of life. People with marked neuroses, who would have gone to the

wall a couple of centuries ago from want of physical strength, now

support themselves by indoor light work, marry, and reproduce their

kind. Minute division of labor involves monotonous toil and increases

the impairment of the body's resistance to mental and nervous strain,

and abuse of the nerve-stimulants tea, coffee, tobacco, or, worst of

all, alcohol and narcotics, add to the evil. Degeneration due to the

reproduction of poor stock is intensified by intermarriage. Luxury,

idleness, excesses, syphilis, debility, drunkenness, poverty, disease,

and overwork produce vitiated constitutions in which varying types of

insanity appear in various nations and climates, but, so far as is

known at present, not in very different degree under similar

conditions. One of the great problems of the day is whether the many

conditions incompatible with health in our crowded populations can be

overcome so as to prevent the degeneration going on thereby.

In early life chiefly the degenerative or the hereditary type of

insanity occurs, or some modification of it. The prevalent forms

coming next are insanity of puberty and adolescence and the curious

morbid psychological developments of lying, stealing, running away

from home, all sorts of perversity of action and thought—impulse

overpowering reason; often resulting in cure if wisely treated, but

not seldom ending in various forms of so-called moral insanity,

suicide, epilepsy, hysteria, primary insanity, prostitution, and

offences against the laws. It is largely a matter of accident rather

than a result of any established principle whether such boys and girls

are sent to reformatories and prisons or to insane asylums. In the

progressively advancing years of life organic {117} mental disease and

the psychoneuroses are more common, the favorable or unfavorable type

of which depends largely upon the degree of degenerative tendency in

each case.

The exhaustion and the disturbed cerebral circulation arising from

acute and chronic diseases, profound anæmia, or prolonged mental

strain, associated with emotional disturbance from any cause, are

among the antecedents of insanity. By our asylum reports ill-health is

second only to intemperance as an exciting cause of insanity, and

ill-health comes probably more largely from poverty than from any

other direct cause. Diseases and accidents to the mother during

gestation and injuries to the infant's head during parturition may

reasonably be supposed to so affect the fœtal brain as to predispose

to insanity in later life.

Of 18,422 admissions tabulated from reports of Massachusetts asylums,

the prevalence of insanity by ages was approximately as follows:

------------------+-------------+-----------------+---------------

| | | Admissions per

Age. | Number of | Population by | 100,000 of

| Admissions. | Census of 1875. | Population.

------------------+-------------+-----------------+---------------

15 and under | 366 | 312,103[6] | 117

15 to 20 | 1,380 | 165,936 | 832

20 to 30 | 5,269 | 310,861 | 1695

30 to 40 | 4,632 | 240,966 | 1922

40 to 50 | 3,372 | 182,823 | 1789

50 to 60 | 1,797 | 126,430 | 1421

60 to 70 | 976 | 79,186 | 1106

70 to 80 | 382 | 38,283 | 997

Over 80 | 58 | 11,167 | 519

Age not reported | 190 | 10,302 |

+-------------+-----------------+--------------

Total | 18,422 | 1,478,057[6] | 1246

+----------------------------------------------

Total of all ages | —— | 1,651,912 | 1115

-----------------------------------------------------------------

[Footnote 6: Excluding those under five years of age.]

Of the 36,762 persons of unsound mind known to the English lunacy

commission in 1859, there were 31,782 paupers, or 86.45 per cent., as

compared with 4980, or 13.55 per cent., supported by themselves or

their relatives. At the close of 1880, of 73,113 insane, 65,372, or

89.41 per cent., were paupers, and 7741, or 10.59 per cent., were

private patients or self-supporting. The increase in the number of the

latter from 1859 to 1883 was from 2.53 to 2.96 per 10,000 of the

population, or 17 per cent., and of the pauper insane from 16.14 to

25.72, or 59 per cent., while general pauperism had rapidly diminished

from 43.7 to 29.5 per 1000 inhabitants.

Similarly, of 9541 admissions to the State hospitals for the insane in

Massachusetts from 1871 to 1880 inclusive, there were 4166 State

patients, 4050 supported by cities and towns, and 1325 private

patients; in other words, 86 per cent. were supported by public

charity. Of 7963 admissions in the same time in which the nationality

was stated, 4532 were natives and 3431 foreigners, respectively 57 and

43 per cent., whereas by the census of 1875 the natives were 74.64 per

cent. of the population, showing more than twice as great a percentage

among foreigners (chiefly laborers) as among natives. It is quite

clear, therefore, that insanity is more prevalent, or at least

increasing more rapidly, {118} among the lower parts of the social

scale than higher up; but it is impossible to say how many people have

dropped from higher planes of life to lower.

Although women are probably more predisposed to insanity than men, and

men more exposed to its objective causes than women, it is not certain

that more insanity occurs in either sex. It is somewhat more prevalent

in single and widowed and divorced people than in those married. The

period of greatest prevalence is earlier in women than in men.

Insanity prevails not only at a time of life when the strain on mind

and body is great, as is shown by the preceding table, but also in

those places where the effort is most intense. That fact is well shown

in the distribution of insanity over the State in the large and small

towns, being greatest where the concentration of population brings

with it extremes of poverty and wealth, as indicated by the following

table, showing the number of admissions accredited to cities and towns

in the McLean, South Boston, and State hospitals for the insane per

100,000 inhabitants from 1871 to 1880, the difference being

exaggerated by the proximity of the hospitals and greater ease of

commitment in the larger towns:

-------+------------------+-------------+-----------+--------------

| | | | Insane

Number | | Inhabitants | | Patients

of | Population. | by Census | Insane | per 100,000

Towns. | | of 1875. | Patients. | Inhabitants.

-------+------------------+-------------+-----------+--------------

341 | The State | 1,651,912 | 5689 | 344

1 | Boston | 341,919 | 1987 | 581

12 | 20,000 to 50,000 | 405,655 | 1486 | 367

42 | 5000 to 20,000 | 367,957 | 1193 | 324

286 | 5000 and under | 536,381 | 1023 | 190

-------+------------------+-------------+-----------+--------------

Of 9381 men and 9041 women admitted to our asylums, 7435 were married,

8193 single, and 1620 widowed or divorced. Of the 9381 males, 2215

were laborers, 1357 farmers, 313 clerks, 62 clergymen, 59 physicians,

43 lawyers, 201 students, of whom 114 were in school. Of 4673 females,

52 were school-girls.

The exciting or immediate causes of insanity are usually so complex

that many of the statistics on that point conform to the preconceived

views of the various compilers of them, as it is very easy to pick out

a few from the many; but out of a large number of persons exposed to

the alleged causes of insanity, one can never feel certain how many,

nor indeed what, individuals will become insane.

It is not always easy to say how and when the furrows left in the

brain by the mental and so-called moral causes of insanity have

deepened into actual mental disease. Prolonged emotional and mental

strain or severe mental shock often are directly associated with the

immediate appearance of insanity. In armies, among people separated

from their homes, in prisons, insanity oftener occurs than among the

same people at home. Severe grief, disappointment, great and sudden

joy or success, chagrin, fear, religious or political excitement,

wars, pestilences, domestic or business troubles, poverty, and

misfortune are among the commonly-reported moral causes of insanity,

as are certain occupations involving steady and monotonous toil,

especially if involving mental worry or necessitating unhappy

relations.

{119} Of the physical exciting causes of insanity, intemperance in the

use of alcohol is easily first: luxury and excess in eating, drinking,

and sexual indulgence, especially if associated with overwork or

physical inactivity and mental anxiety, are also dangerous. It is

difficult to estimate the influence of syphilis except when giving

rise to coarse disease of the brain. Masturbation acts as an exciting

cause, chiefly by creating a morbid psychical state and by exalting

the sensibility of the nervous system, but probably not often, even

with the young. Injuries to the brain and nervous system are usually

slow in their operation, unlike the severe mental shock which is at

once followed by insanity. Pain also, if intense, like great loss of

blood, acts slowly by wearing out the powers of resistance, or rapidly

by producing delirium.

A system of practical medicine. By American authors. Vol. 5 · 第 13 / 185 段