The maximum mass of Brain tissue is reached at the age of 20, and then steadily decreases. The Cerebrum is associated with Intellectual Faculties and also exerts a guiding influence over the rest of the Nervous System.

However, it is not necessary for actual life. The Cerebellum maintains Balance, is concerned with the Regulation of Muscular Movements and in preserving the Equilibrium of the Body.

Between 1820 and 1840 it became established that in people who have lost the power of Speech during life, the Brain shows some disease in the Left Frontal Lobe after death.

In 1861 Broca made the first definite discovery in Cerebral localization by proving that the faculty of speech is governed by a center in the region of the Inferior Frontal Gyrus named (after him) Broca's Convolution.

His discovery was followed later by the important observation of Hughlings Jackson that certain forms of Epilepsy, associated with movements beginning in a definite limb are caused by disease affecting the part of the Brain that borders on the Central Sulcus.

This discovery was confirmed and extended by many experimenters and physicians. Grunbaum and others have shown that definite areas near the Central Sulcus are associated with the movement of definite parts.

The Occipital Lobes are associated with the Sense of Sight. The Temporal Lobes with Hearing and the Inner Surface of the same Lobe with the Senses of Taste and Smell.

The purely Intellectual Faculties are probably associated with The Frontal Lobes, which seem to govern nothing else.

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MS is a disease of the Brain and Spinal Cord which though slow in its onset, in time may produce marked symptoms, such as Paralysis and Tremors, and may ultimately render people suffering from it confirmed invalids.

It consists of hardened patches, from the size of a pin-head to that of a pea or larger scattered here and there irregularly through the Brain and Cord each patch being made up of a mass of the connective tissue (Neuroglia).

Which should be present only in sufficient amount to bind the nerve cells and fibers together.

In the earliest stage, the insulating sheaths of the nerve fibers in the hardened patches break up are absorbed, and leave the nerve fibers bare, the connective tissue being later reformed between these.

Although one of the most common Central Nervous System diseases in Europe - there are around 50,000 affected individuals in Britian alone, the cause is still not known.

The disease comes on in young people (onset being rare after the age of 40), apparently without any previous illness. It is more common in first and second children than in those later in birth order, and in small rather than big families.

There may be a hereditary factor, but this is by no means proven. If such exists it is of an obscure nature and linked more to a deficit in the person's reaction to infection than to any precise defect in the nervous system.

The actual changes in the nervous system appear to be due to the action of some substance which dissolves or breaks up the fatty matter of the nerve sheaths.

Symptoms depend greatly upon the part of the Brain and Cord affected by the Sclerotic Patches.

Temporary paralysis of a limb, or of an eye muscle, causing double vision and tremors upon exertion, first in the affected parts, and later in all parts of the body, are early symptoms.

Stiffness of the lower limbs causing the Toes to catch on small irregularities in the ground and Trip the person in Walking, is often one of the first symptoms to be noticed and it is quite annoying.

Increased Activity is shown in the Reflex Movements obtained by striking the Tendons and by stroking the soles of the feet.

The latter reflex shows a characteristic sign (Babinski Sign) in which the Great Toe bends upwards and the other toes spread apart as the sole is stroked, instead of the toes collectively bending downwards as in the normal person.

Tremor of the Eye Movements (Nystagmus) is usually found. Trembling Handwriting, interference with the functions of the Bladder, Giddiness and a peculiar Staccato or Scanning speech are common symptoms at a later stage.

Numbness and Tingling in the Extremeties occur commonly, particularly in the early stages of the disease.

As it progresses, the Paralyses, which were transitory at first, now become confirmed, often with great rigidity in the limbs. Many cases progress very slowly and show little or no tendency to shortening of the duration of life.

It is important to keep the Nerves and Muscles functioning and therefore the patient should remain at work as long as he or she is capable of doing it.

In any case should regularly Exercise the lower Limbs by Walking and the upper Limbs by Carrying Out Movements That Require Coordination.