THE CAVENDISH LECTURE 25 



examples \vc may lake Piscnti's case (Fig. 15) and a woiKlcrful 

 pedigree of Mr. l^ishop Harman (Fig. 16). Well, these are indi- 

 vidual illustrations of what is happening, because the intensive 



"Blindness." 



't 





= f-f 4#.® 



I I 1 ^-. rn I 11 \ 1 



IV, 



I — rn I 



^P Presumably normal. 

 ^ State unknown. 



Fig. 13— By permission from "The Treasury of Human Inheritance." 

 Loeb's case of hereditary blindness. All members in blind asylums. 



selection of the old days has been suspended. That suspension is 

 partly due to medical progress ; you are enabling the deformed to 

 live, the blind to see, the weakling to survive— and it is partly due 



Deaf Mutism. 



.. .^ ,^ 5^ .^ ,^ „^ M^ 



j:—] — I — I r-\ /. I I FTk I ri I I — rn — i — i — i 



1 A ' A I — rn — I — 1 



+ Died in infancy. .+ Imbecile. I \ I I I | I I 



* Di^ ycng. H B *' Natural - ^^ ^^ ^ ^^ ^q ,©T§^ 



f Sdll born. ^^ ..... V. v* * V ** * ■*" 



^^ 3f 49 : 



The Treasury of Human Inheritance 



p,c i4._Eugenics Laboratory case to illustrate propagation of deaf- 

 mutism by the intermarriage of deaf-mutes. 



to the social provision made for these weaklings— the feeble-minded 

 woman goes to the workhouse as a matter of course for her 

 fourth or fifth illegitimate child, while the insane man, overcome 



