In their ordinary motions they may be said to resemble two persons waltzing. In a room they seem to roll about, as it were, but when they walk to any distance, they proceed straight forward with a gait like other people. As they rise up or sit down, or stoop, their movements are playful, though strange, not ungraceful, and without the appearance of constraint. The average height of their countrymen is less than that of Europeans, and they seem rather short for their age, even judging them by their own standard. They are much shorter than the ordinary run of youths in this country at eighteen years of age, and are both of the same height. In personal appearance there is a striking resemblance between them; this, however, is but on first impression, for, on closer examination, considerable difference will be observed. The colour of their skin and form of the nose, lips, and eyes, denote them as belonging to the Chinese; but they have not that broad and flat face which is characteristic of the Mingol race. Their foreheads are higher and narrower than those of their countrymen generally. Both are lively and intelligent; they pay much attention to what is passing around them; and are very grateful for any little attention that is paid to them. As a proof of their intelligence, it may be stated that they learned to play at Draughts very readily, and were soon able to beat those who had assisted in teaching them. Their appearance is perfect health. To their friends and attendants, and to each other, they are said to be much attached. They appear to be excellent physiognomists, for they read the countenance of the visiter readily, and are easily affronted with any contemptuous expressions. It is said they have not learnt any manual art beyond rowing a boat, but they can run and jump, and climb cracks and rigging with great facility. They are dressed in short, loose, green jackets and trousers, the costume of their country, which is very convenient, and allows the utmost freedom of motion, but does not show the form of the boys to advantage. With their arms twined round each other, as they bend down or move about, they look like a group of statuary. Dr. Warren, in his report, states that he _never heard them speak to each other_, though they were very fond of talking with a young Siamese, who was brought with them as a companion. They, however, appear to have a means of communication more rapid than by words. The point most worthy of remark, in regard to their actions and movements, is, that they seem, generally speaking, to be actuated but by one will; and that from whichever of them the volition of the moment proceeds, it seems imperative upon both. Occasionally, there is an exception to this remark--as, on the voyage from Siam to the United States, when one wanted to bathe, and the other refused, on account of the coldness of the weather, they quarrelled on the subject.