Dr Lyon (xn Hereditary Transmission. 255 



might think he had told me also, said to me, " Who do you 

 think baby is like?" "Oh," said I, "I do not know ; I always 

 think all babies are alike." I saw that boy several months after 

 in his father's house, and saw the same expression of mouth, 

 and said to my friend, " There is no doubt, in my mind, of that 

 being your child, he has that occasional remarkable character- 

 istic expression of your mouth." I was examining a man in 

 Guy's Hospital one day. On feeling his pulse, I found a ridge 

 of bone like the union of an old fracture about the lower fourth 

 of the radius. I said, " You have broken your arm some day." 

 " No," said he, " that lump w^as always there. My daughter 

 has exactly the same." She was by the bedside visiting her 

 father. I found in her arm a repeat of that I had observed 

 in her father's. Mr Wordsworth showed, at the Medical 

 Society of London in January last, six persons belonging to 

 one family, with an abnormal position of the crystalline lens 

 in each eye — they were the mother, two of her sons, and three 

 of their children. The mother stated that her father and her 

 grandfather were all similarly affected ; if this be so, there are 

 ten cases occurring in five generations. They all complained 

 of being short-sighted, and on examination by the ophthalmo- 

 scope the edge of the lens was visible in the pupil. 



Aman named ZerahOolburn,anative of Vermont, N. America, 

 came to London in the early part of the present century, and 

 was publicly exhibited for an extraordinary power he possessed 

 of arithmetical calculation from memory. He had five fingers 

 and a thumb on each hand, and six toes on each foot. He 

 was examined by the late Sir Antony Carlisle, and made the 

 subject of a communication to the Eoyal Society, and pub- 

 lished in the Philosophical Transactions for 1813. Sir 

 Antony has traced there Zerah's genealogy to his great- 

 grandfather, adding that they do not possess any knowledge 

 of ancestors beyond that time. 



The genealogy is curious as showing the reproduction of 

 this redundancy of parts, issuing alike from the male and 

 female side. The great-grandfather, a normally-formed man, 

 marries a woman with an excess of fingers and toes on her 

 hands and feet ; they have issue, a daughter, whose feet and 

 one hand have an excess of toes and fingers. She marries a 



