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Isidore Geoffroy Saint-Hilaire * describes and figures 
the head of a duck with a tuft of feathers on the occiput 
and a foot. In describing the foot Saint-Hilaire states 
that the cranium underlying the tuft was defective, and 
especially notes that the cranial opening was similar to 
that found in “les poules a téte huppee.” 
Fic. 14.—Head of a duckling with a tumour and abnormal foot 
growing from the occiput. 
During life this foot, like the normal pair, was of a 
beautiful orange-yellow colour. Some who saw the duck 
were suspicious that the foot had been engrafted on to the 
occiput accidentally : such an opinion had no foundation. 
* “Des Anomalies de lorganisation chez ’homme et les Ani- 
maux,” tome iil. p. 194. 
