oe 
Verhältnisse zur schematischen Darstellung bringt, wie ich dies in 
Fig. 5 ausgeführt habe, so fällt beim Vergleich mit dem entsprechenden 
Schema vom Menschen (Fig. 6) die geradezu vollkommene Ueberein- 
stimmung in der Verteilung der Gefäßursprünge auf; bei beiden fehlt 
ein Truncus brachiocephalicus und die genannten Gefäße gehen in 
gleicher Ordnung aus dem Bogen der Aorta hervor: Subelavia sin. et 
Carotis sin. isoliert, Carotis dextra et Subclavia dextra aus der Brachio- 
cephalica. 
Während also bei meinem Falle eine Anlehnung an die Verhält- 
nisse beim Hunde konstatiert werden kann, findet sich beim Falle 
Huryras ein Verhalten, welches jenem beim Menschen homolog ist. 
Nachdruck verboten. 
Cases of Supernumerary Hallux and their Etiology. 
By J. D. Fınpes, A.M. B.Sc. M.B. Ch.B. (Aberdeen), 
Demonstrator of Anatomy, University of Sheffield. 
With 2 Figures. 
Cases of supernumerary thumb, in the experience of most clinicians, 
do not appear to be so frequent as cases of supernumerary little finger 
i. e. post-minimi digiti; and apparently there are two distinct classes 
of this abnormality, namely: those with a history of heredity, and 
those with no such history. 
The two cases here described are very similar in appearance 
although the first as revealed by inspection and skiagrams is slightly 
more marked than the second. 
Casel. This was in the left hand of a large healthy girl. S.M. 
aged three. She was the youngest of a family of three and 12 years 
had elapsed between her birth and that of the last child. The other 
children were absolutely normal in all respects. There was no con- 
genital abnormality in the father or mother nor in any of the grand- 
parents nor near relations. Special enquiry was made in regard to 
deformities of the hands and feet and also other congenital defects. 
Thus a history of heredity was absolutely lacking. 
The mother had a very definite and interesting theory of how 
this abnormality happened as follows: 
When she was between three and four months pregnant she went 
with her sister-in-law to a dentist; there she saw the operator with 
a dental forceps in his hand. This instrument filled her with very 
great disgust and loathing, so much so that she did not sleep the 
