FAMILY RECORD. 25 



1.11-1.17. Seven still-born children of unknown sex. No infor- 

 mation concerning their hands has been obtainable. 



This finishes the description of the II generation. Our investigation 

 shows that 5 of the 10 members of the family born at full term had 

 brachyphalangy of the B !-type. It is impossible to tell whether any 

 of the members whom the author of the family book regarded as normal 

 may not have been brachyphalangous of the B-type. The instances 

 in which this condition has escaped the observation of very intelligent 

 observers are numerous within our experience. It is true that we have 

 not been able to point out the occurrence of brachyphalangy among 

 the descendants of those members of the family who were supposed to 

 be normal, but not very much importance can be attributed to this 

 fact, because we have so far concentrated our attention on the lines 

 descending from 1.1, 1.7, and 1.9. 



The inquiries and examinations we have been able to make within 

 the other lines are not elaborate enough to permit certain conclusions 

 drawn from a negative result. Where the result has been positive 

 that is, where we have been able to show the occurrence of brachypha- 

 langy among the descendants of members of generation II, the con- 

 ditions are different. The inheritance of the malformation as worked 

 out in this paper allows us, in such cases, to conclude with certainty 

 that the member of generation II, from whom the line in question 

 descends, was brachyphalangous, at least when no intermarriages 

 within the lines have taken place. 



In the following only the descendants of No. 1.1 9 , 1.7 cf, and 1.9 cf 

 will be described. They will be spoken of as belonging respectively to 

 "Lines" 1, 7, and 9. 



LINE 1, III GENERATION. 



The members of the III generation belonging to line 1 comprise the 

 5 children of the brachyphalangous 1.1 9 G. H. 0. and her husband 

 P. F. M. H. 



11. Id 1 C. E. H. (Mar. 11, 1814-1884), a farmer, married in 1859 

 M. C., but had no children. None of the members of the family or 

 other persons now living, who knew him, noticed any abnormality of 

 his indices. 



11.2 cf F. G. H. (May 13, 1819-Aug. 29, 1856), unmarried. A 

 member of the family who knew him "never noticed or heard of short- 

 ness of his fingers." 



11.3 cf F. L. C. G. H. (Mar. 31, 1821-Mar. 20, 1895), unmarried. 

 A letter from one of his nieces states that "uncle L. had short index 

 fingers." This statement is confirmed by one of his nephews, who 

 adds that "both his index fingers had a crook" that is, were bent. 

 The bent condition indicates that his brachyphalangy was of the 

 B !-type. Genetically he must have been heterozygous for the factor 

 in question. 



