MR. BOLTON ON THE UNITED SIAMESE TWINS. 
183 
usual, Chang’s became furred and dry. The bowels of both had been natu- 
rally relieved the day previous, and each was directed to take such medicines 
as experience had shown to be proper in the malady now common to both. 
Under this discipline and suitable diet, together with the additional clothing 
of leather waistcoats, and a leather coverlet for their bed, then considered to 
be required on account of the inclement winter, they both regained their ordi- 
nary state of health. 
These incidents are recorded merely to show that they have been treated as 
two distinct persons, although from the very unustial circumstance of their 
conjunction, the same causes of disorder are presented to both, and similar 
consequences have thence ensued. 
They have had the measles, and at eight years of age the confluent small- 
pox, distinct marks of the latter disease being still visible on their faces. 
When they were attacked with variola, a brother and two sisters had also that 
malady so severely as to occasion their deaths. While lying on their backs in 
bed, during their late illness, I counted the pulse of Eng in this position ; it 
was sixty-three, soft and regular. I then went round the bed to examine 
Chang, but in the mean time both had had occasion to move, and returned 
immediately to their former position. Although these movements were effected 
quietly, and did not occupy half a minute, producing no coughing, yet on 
counting Chang’s pulse, it was eighty, and soft. I then again counted Eng’s, 
which was also eighty, soft and regular. After a lapse of ten minutes, both 
having remained perfectly still, on counting their pulses I found them at 
seventy-two. 
I have submitted these occurrences in order to show the reciprocity of their 
symptoms under similar conditions of disorder. 
In a healthy state, their ordinary pulses are generally alike, but Chang’s is the 
strongest ; they are both easily excited, and when in one the pulse has been, 
from this cause, raised to ninety, that of the more passive brother has remained 
at seventy-two. They always take their meals together, objecting to be seen 
while thus engaged. Neither will eat or drink what the other dislikes, though 
they occasionally take different sorts of food at the same time, such as meat or 
fish. When the appetite of the one is satiated, the other is also satisfied. In their 
habits they are very cleanly and delicate, and mutually assist each other in 
