1S6 
MU. BOLTON ON THE UNITED SIAMESE TWINS. 
exclusively to the other. As, however, the capillary blood-vessels of each un- 
questionably inosculate with those of his companion in the uniting- band, it 
must be obvious, that certain constitutional diseases, and many diffusible me- 
dicinal substances, would, partially at least, pervade both the united twins, 
though only one of them were exposed to their influences. 
In addressing these particulars and observations to the Royal Society, I 
have intentionally confined myself to a narration of facts, and have abstained 
from discussions of a speculative or hypothetical character. 
I cannot here deny myself the pleasure of stating the kindness which has at 
all times been evinced towards these youths by Captain Coffin, Mr. Hunter, 
and Mr. Hale : the unwearied anxiety manifested by these gentlemen for their 
welfare and happiness, and the liberal manner in which they have uniformly 
afforded the means of investigating so curious an object of philosophical in- 
quiry, entitle them equally to the thanks of the philanthropist and the lover of 
science. 
3 King Street, St. James's Square, 
March 29 th, 1830. 
The Plate exhibits two reduced views of the uniting band ; also a represen- 
tation of a section of the fac simile in wax. 
Fig. 1 . represents the front view of the ordinary standing attitude of the 
youths. 
Fig. 2. exhibits the opposite side ; or what may be termed the ordinary back 
view. 
Fig. 3. represents a section through the middle of the band in its relaxed or 
unst retched state. 
