22 THE MENDEL JOURNAL 



No. 7. Suffers from cough, is very susceptible to 



cold, very slight in build, is losing flesh, 



is 19 years of age, but looks only 15, and 



has no moustache. 

 „ 8. Normal. 



„ 9. Delicate : suffers from headache. 

 „ 10. Died at 19 years of age from tuberculosis of 



vertebral column. 

 „ 11. Died from tuberculosis of lungs. First 



manifested between the 19th and 20th 



year. 

 „ 12. Died at 13 years of age from rapid pulmonary 



consumption. 

 ,, 13. Quite normal. 

 „ 14. Normal, but suffers from adenoids. 



In addition to the individuals here given, there 

 were in the left hand Family (members Nos. 2 to 7), 

 six more children which were stillborn, and in the 

 right hand Family (Nos. 8 to 14), there Were seven 

 stillborn children. 



Deductions from the Pedigree. 

 One fact calls for observation. In the P genera- 

 tion, Nos. 2 and 3 are sister and brother respectively, 

 and Nos. 4 and 6 are sisters. Tuberculosis has ap- 

 peared in both the branches to which Nos. 4 and 6 in 

 part gave rise, and it has also appeared in both the 

 branches which owe their origin to Nos. 2 and 3. 

 Nos. 3 and 4 and 2 and 6 may therefore be tentatively 

 regarded as D R's, since clearly the appearance of 

 themselves and their members in a family has resulted 

 in the manifestation of tuberculosis in that family. 



