124 SOREN HANSEN 
a consequence of amniotic irregularities and thus it is probable that 
both of these widely different anomalies have been the expression of ~ 
the same diseased condition of the amnion (RIscHBIETH, 1910). It is 
the latter, therefore, and not the more casual consequences of it, that 
is heritable and this is probable the reason why such anomalies, as is 
well-known, are inherited in quite an irregular manner. Cases of this. 
kind are very common but not rarely much more puzzling. Even if 
the explanation indicated for this definite case is the correct one, it 
can by no means be applied generally. 
LITERATURE CITED. 
1. LUNDBORG, HERMAN. 1913. Medizinisch-Biologische Familienforschungen. Jena. 
2. RISCHBIETH, H. 1910. Hare-Lip and Cleft Palate. Treasury of Human In- 
heritance. Part IV. London. 
3. Ripin, E. 1916. Studien über Vererbung und Entstehung geistiger Störungen. 
I. Berlin. 
4; STROHMAYER, W. 1910. Die Ahnentafel der König Ludwig II und Otto I von 
Bayern. Archiv für Rassen- und Gesellschaftsbiologie. | 
5. THACKERAY, W. M. 1860. The four Georges. London. 
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