492 
5. This specimen (Fig. 5) was loaned by Prof. RosExßBErGER. It 
represents a three-legged rooster dressed apparently for market. Upon 
examination the third leg is seen placed near the tail region. Further 
examination shows that this leg is attached to a bony pelvis that is 
an off-shoot of the main skeleton just at junction of sacrum and coceyx. 
This off-shoot is approximately 7 em. long and 5 cm. broad. The leg 
is articulated just under 
cover of the end of the pelvis. 
The claws are six in number 
and large, almost full size 
and the main bone of the 
footapparently single. Upon 
cutting the skin and exa- 
mining, the bone is not 
smooth at circumference, but 
ridged and grooved as though 
the result of fusion of two 
bones as the six toes seem 
to indicate. Leg and thigh 
parts are not over 25 cm. 
long and all joints seem 
normal and freely movable. 
Of special interest, however, 
is the presence of two clo- 
acal orifices. When the 
chicken was drawn the hind- 
gut was left in situ and at 
about 5 cm. from the end. 
it is seen to bifurcate, one 
part going to each orifice 
and such orifice unquestion- 
ably functionated as the 
Fig. 5. Fullgrown chicken showing dupli- passage-way of each was un- 
cation of sacral region and single (fused) pelvic r 
limb. The duplicated portion of the body is obstructed and the one near 
larger than the normal part. the third leg still contained 
some fecal matter. 
6. This two-headed chick (Fig. 6), presented by a student, represents 
a chicken at 21 days incubation. Whether it lived longer is not 
stated. This monster shows two beaks, four eyeballs and two frontal 
> 
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