58 Hereditary Si/ndacti/lism and Polydaetylism 



Right Foot. The bony condition of this foot so closely resembles 

 that of her mother's described from Skiagraph Bj, that one description 

 will suffice. If anything the abnormal condition here is more pro- 

 nounced than in the mother. 



Left Foot. The skiagraph shows hei'e in an apparently normal foot 

 a detached and anomalous piece of bone, lying in close proximity to the 

 head of the 5th metatarsal bones, otherwise the foot is normal. 



IV. 14. Charles (see Plate XIV, D), aged 12. Webbed 3rd and 4th 

 fingers on right hand and 6 toes on each foot, 4th, 5th, 6th webbed 

 with partial webbing of 3rd and 4th toes. 



Skiagraph F (Plate XVII). Right Hand shows bony abnormalities 

 of the 3rd and 4th fingers. The proximal phalanx of the 4th finger is 

 represented by 3 distinct bones, the larger central bone acting as a 

 phalanx whose proximal end articulates with the 4th metacarpal and 

 distal end with the middle phalanx. There are two lateral bones, the 

 larger lying towards the 5th finger and the smaller towards the 3rd 

 finger. 



The middle phalanx of the 4th iinger forms a bony union with the 

 head of the proximal phalanx of the 3rd finger and the remaining 

 phalanges of both fingers join in bony union to form practically one 

 bone. 



Sesamoid bones not shown in skiagi-aph. 



The middle phalanx of the 5th finger shows a small piece of bone on 

 its dorsal aspect, both fingers are crooked. 



SkiagrajDh Fj (Plate XVIII). Right Foot shows 6 metatarsal bones, 

 the 6th metatarsal bone is almost complete but lacks the rounded 

 articular head. The 5th and 6th proximal phalanges are distinct and 

 separate but have one common epiphysis which articulates with the 

 head of the 5th metatarsal. The 5th, 6th, middle and terminal 

 phalanges are distinct and separate. 



Left Foot shows G complete metatarsals and phalanges. 



IV. 16. Mabel (see Plate XIV). Webbed 3rd and 4th fingers on 

 right hand. Left hand and feet normal. 



Right Hand, bones normal. 



Left Hand, bones normal. 



Sesamoid bones, not shown. 



IV. 15, 17. Ivy and Phyllis, unaffected. 



IV. 19—24. (Allen) all unaffected. 



IV. 25—31. (Oliver) all unaffected. 



IV. 32. (Joseph) unaifected. 



