hoses, such as acute alcoholic hallucinosis; by
lack of muscular exercise, resulting in a deficient supply of oxygen to
burn up the accumulated toxins from energy-producing foods; by the
infections, which may result in the infection-exhaustion psychoses;
by wrong methods of education, and by surroundings which demand too
severe a mental strain in the struggle toward adjustment. These damages
from without we class roughly as environmental.

From within the mental workings may be injured by emotional dominance;
by bad habits of thinking and feeling and doing--often the result of
wrong methods of education; by defective heredity; by undeveloped will;
by the insanities. These danger sources from within we might classify as
self-produced and hereditary.

There may be disorders of any or every function of the intellect,
disorders of feeling, and perversions of will. Some of the most commonly
met we list below.

Disorders of the _Functions_ of _Intellect_.

/ Hyperesthesia (exaggeration of sensation)
{ as found in neurasthenia, or in mania.
{ Anesthesia (absence of sensation)
{ as in the numbness of hysteria; in sensory
{ paralysis.
Disorders / Retardation
of < as in dementia and melancholia.
Sensation \ "Clouding" or dulness
{ as in simple depression.
{ Perversion
{ as in dementia and melancholia. Sweet may taste
\ sour; fresh food may smell decayed.

/ Hyperesthesia (exaggeration)
{ as in neurasthenia or mania.
{ Anesthesia
Disorders { as in hysteria or paralysis.
of { Retardation
Perception { as in dementia and melancholia.
/ "Clouding" or dulness
(being < as in simple depression.
dependent \ Illusion
on sensation { found in normal mind--easily corrected;
is always { found in many insanities.
disturbed { Hallucinations
with it). { frequently met in the infection-exhaustion psychoses,
{ in dementia, in paranoia, in acute
\ hallucinosis of alcoholism.

/ Hypochondriasis
{ found in many of the hypersuggestible, frequent
{ in the mild depressions and in all victims of
{ self-attention.