PERSONAL APPEARANCES IN HEALTH AND DISEASE. 51 



strength of the muscles attached to them. Thus a small 

 skull with thin walls may contain a comparatively large 

 brain, and vice versd. But even if the reverse were the 

 fact, mere size of brain goes for nothing in estimating its 

 capacity, and more will be learnt by studying the complexity 

 of its constituent elements than any amount of happy guesses 

 and shrewd surmises arrived at from a study of the external 

 surface of the skull, especially when it is remembered that 

 all the inferior parts of the brain are concealed and have 

 no relation to the outer regions of the skull. 



In the neck an irregular enlargement on each side 

 results from enlargement of bodies connected with the 

 lymphatic system, and called lymphatic glands, which, 

 forming a chain on each side of the neck, as well as 

 beneath the jaw, may inflame and lead to the formation 

 of abscesses, which, after bursting and discharging their 

 contents, leave behind unsightly puckered scars in the 

 skin. The tendency to the spontaneous enlargement of 

 these structures, and their ready inflammation, is most 

 marked in the strumous or scrofulous type of constitution. 

 Sometimes an enlargement of these neck-glands is shared 

 in by similar change in the like glands in other parts of 

 the body, and large irregular tumours may grow up and 

 conceal the natural shape of the neck. The Derbyshire 

 neck is the result of the enlargement of a structure the 

 precise office of which is unknown. This is a fleshy 



