628 Wisconsin Academy of Sciences, Arts, and Letters. 
Fig. 1, 
Fig. 2 
Fig. 3. 
Fig. 4. 
Fig. 5. 
Fig. 6. 
DESCRIPTION OF PLATE XLIX. 
Distribution of ducts in case No. 17; one of the cases which 
presented a great variation in the arrangement of the ducts. 
It will be noted that the greatest variation is found on the 
right side; all the ducts coming from the various lobes en¬ 
ter the ductus cysticus or the ductus choledochus separately. 
Note especially the duct coming from the upper part of the 
right median lobe and emptying into the vesica fellea: — 
the only instance of a ductus hepato-cysticus found in the 
series. A number of small anastomosing ducts are also 
shown. 
Case 27. The peculiarities of this case have been mentioned 
in the text. It may oe well to state that there was no ob¬ 
struction present to the free flow of the bile and the walls 
of all parts of the ducts and dilatation were perfectly nor¬ 
mal. That the anomaly is not an artifact was shown by the 
fact that the peculiarity was noted before the ducts were in¬ 
jected. 
Case 30. The ductus hepaticus dexter is absent. The ducts 
which usually form the ductus hepaticus dexter join inde¬ 
pendently the ductus hepaticus sinister. 
Case 34. This specimen shows a wide divergence from the 
normal. Two vesicae felleae and ducti cystici are present. 
The ducts from the right half of the liver join independently 
the right ductus cysticus, while the ducts from the left half 
form a ductus hepaticus sinister in the normal manner. 
Case 19. No ductus hepaticus dexter present. The following 
variations are especially noteworthy:—a duct passes from 
the lower part of the caudal division of the right lateral 
lobe forward and joins the ductus cysticus; the duct from 
the quadrate lobe passes behind the ductus hepaticus sinis¬ 
ter and extending nearly the whole length of the caudate 
lobe joins the ductus choledochus at the porta hepatis; the 
duct from the caudate lobe passes forward, behind the duc¬ 
tus hepaticus sinister and joins the ductus cysticus. 
Case 10. No ductus hepaticus dexter present. The duct from 
the cranial division of the lateral lobe joins the ductus 
