210 MR. J. B. SUTTON ON DISEASES OF FApr. 20, 
back. However, an examination of such pieces of the cord as 
remained showed well-marked and indisputable sclerotic changes. 
In 1842 Sir James Paget and Dr. William Budd’ almost simul- 
taneously directed attention to the frequent symmetry exhibited by 
disease of the tissues of the body. For example, an eruption on 
the skin of one leg is occasionally imitated by an eruption on the 
opposite leg, symmetrical, not only in position, but often in the 
shape of the patch, in the grouping, and even in the number of 
spots in each group. This symmetry is not merely confined to skin 
eruptions, but to diseases of the joints, sense-organs, nerves, bones, 
tumours, &c. Examples of symmetry occur very frequently in 
animals as a result of disease; and the following cases will serve as 
striking instances. 
In the accompanying drawings (fig. 3) will be seen the scapula 
Fig. 3. 
Examples of symmetrical exostoses (c) in the skeleton of a Monkey, affecting the 
scapula, great trochanter, and coracoid process. The tumours on the 
opposite side were exactly similar in shape and situation, and nearly 
equal in size. : 
and femur of a Bonnet-Monkey that died of bronchitis complicating 
rickets. The inferior angle of the scapula is occupied by an osseous 
tumour containing tracts of cartilage. The base of the coracoid 
process presents a rounded projection, which would probably have 
grown into a tumour had the Monkey lived. The great trochanter 
of the femur presents also a rounded tumour similar to that of the 
scapula, but containing less cartilage. Each humerus presented a 
1 Med.-Chir. Trans. vol. xxv. 
—y es 
I Re | 
é 
Perincl x: 
