PHENOMENA OF INHERITANCE 



44i 



Hypotrichosis (hairlessness associ- 

 ated with lack of teeth). 

 Kidn eys : 



Diabetes insipidus. 

 Diabetes mellitus. 

 Normal. 



Nervous System : 

 Normal condition. 



Normal. 



Normal. 



Normal. 



Normal. 



Huntington's chorea. 

 Muscular atrophy. 

 Normal. 



Eyes: 



Hereditary cataract. 



Pigmentary degeneration of retina. 



Glancoma (internal pressure and 

 swelling of eyeball). 



Coloboma (open suture in iris). 



Displaced lens. 

 Ears : 



Normal. 



Normal. 



Normal. 



Normal. 

 Normal. 



Alkaptonuria (urine dark after oxi- 

 dation). 



General neuropathy, e. g., 



Hereditary epilepsy. 



Hereditary feeblemindedness. 



Hereditary insanity. 



Hereditary alcoholism. 



Hereditary criminality. 



Hereditary hysteria. 



Multiple sclerosis (diffuse degen- 

 eration of nerve tissue). 



Friedrieh's disease (degeneration 

 of upper part of spinal cord). 



Meniere's disease (dizziness and 

 roaring in ears). 



Chorea (St. Vitus dance). 



Normal 



Normal 



Thomsen 's disease (lack of muscu- 

 lar tone). 



Normal. 

 Normal. 

 Normal. 



Normal. 

 Normal. 



Deaf-mutism. 



Otosclerosis (thickened tympanum 

 with hardness of hearing). 



SEX-LTXKED CHARACTERS 



Eecessive characters, appearing in male when simplex, in female only when 

 duplex. 



Normal. Gower 's muscular atrophy. 



Normal. Haemophilia (slow clotting of 



blood). 



Normal. Color-blindness (Daltonism; inabil- 



ity to distinguish red from 

 green ) . 



Normal. Night blindness (inability to see by 



faint light). 



Normal. Neuritis optica (progressive atrophy 



of optic nerve). 



