THE WANT OF FOEE-AllMS AND HANDS. 451 
one case of the kind having ever, I believe, been com- 
municated to the public * : on which account, I flatter my- 
self that this narrative, respecting a boy thus circum- 
stanced, whom I accidentally met with, in the course of the 
last autumn, at an obscure village in England, may not 
prove wholly uninteresting. We shall at least learn from 
this instructive example, that the mere stumps of the ossa 
humeri are not only capable of being applied to the great- 
est use, but that, admirably as the hands are constructed 
for the exigencies of man, their total loss, even though the 
toes should not be required to act as their substitutes, is 
by no means irremediable. 
Mark Yarwood, the subject of the present memoir, is 
the son of poor, but respectable, parents, dwelling at Ash- 
ley, a small village, included in the parish of Bowden, 
in Cheshire. He was born without fore-arms and hands ; 
has arrived at the age of twelve ; and is now a fine, stout, 
healthy-looking boy, of a lively and cheerful temper, and 
good disposition. On each of the ossa humeri there are 
prominences which bear a faint resemblance, in their ap- 
pearance and situation, to those of the external condyles, 
whence two prolongations, one on each arm, may be ob- 
served, which are slightly bent inwards; neither of them, how- 
ever, is much more than an inch in length, while that of the 
left limb is perhaps about a quarter of an inch longer than 
the one which terminates the right as humeri -f. (See Plate 
* The case of a German, mentioned in p. 459 of this volume, and com- 
municated to the Society by Gixbert Innes, Esq. upon the occasion of 
reading this paper. 
-|- The measurement of the Ossa humeri and their projections, sent me by 
a medical friend since drawing up this Memoir, may be stated as follows ; it 
being necessary previously to remark, that the distance between the nearest 
