178 
MR. BOLTON ON THE UNITED SIAMESE TWINS. 
though of lax fibre. She was thirty-five years of age when her twins were 
born, and had previously given birth to several other children, none of whom 
had any malformation. She declared to Captain Coffin that she suffered less 
during her pregnancy with these than on any similar occasion, and also that 
her labour was not attended with the least difficulty. She further stated that 
the twins were born with the head of one between the legs of the other, and 
were rather small infants. All her other children, except these and two others, 
a brother and sister, are dead. 
The united twins left Siam in the beginning of April 1829, with Captain 
Coffin and Mr. Hunter, on board the American ship Sachem, and arrived at 
Boston in the United States in the following August, where they remained 
eight weeks, during which period they excited the greatest interest among 
scientific and professional men. 
They embarked at New York for England in the October following, and 
arrived in London on the evening of the 19th of November 1829. On the 24th 
of November an invitation was given to the most distinguished persons of 
the medical faculty in London, to view them at the Egyptian Hall, Piccadilly, 
and on the 26th of November I was desired to become their sole medical 
attendant. 
These youths are both of the same height, namely, five feet two inches ; and 
their united weight is one hundred and eighty pounds. They are much 
shorter, and appear less advanced in puberty, than youths of this country at 
the age of eighteen years ; but the average stature of their countrymen is less 
than that of Europeans. Many of our ordinary twins bear a stronger resem- 
blance to each other in countenance than is observed in these youths. Their 
bodies and limbs are well formed, but the spine of Chang, who habitually 
holds his arm over the shoulder of Eng, is considerably curved laterally, an 
effect which is apparently the result of this long continued habit. They have 
not the broad and flat forehead so characteristic of the Chinese race, but re- 
semble the lower class of the people of Canton in the colour of their skins, 
and in the forms of their noses, lips, eyes, and ears. The left eye of Chang is 
weaker than the right ; but this is reversed in the case of Eng, so that each 
sees Lest with the eye nearest his brother. Their bodies are much paler now 
than they were on their first arrival in England. Their genital organs are, 
