J. S. Manson 55 



Left IhiiuJ. The marked deformity of the webbed 3rd and 4th 

 Hiigcrs is well seen on Plato X\', and the i;xplanatibn of this Ac- 

 formity is at once evident from (he eondition of the bones shown in 

 the Skiagraph. This shows that the terminal and middle bony pha- 

 langes of the 3rd finger are shortened and joined to form one bone 

 which articidates with the head of a proximal normal phalanx. 



The 4th finger shows a remarkable bony formation. Its proximal 

 phalanx is made up of an irregular mass of bone unlike a normal 

 phalanx. The aspect of this bone adjacent to the little finger resembles 

 that of a normal phalanx, but the aspect next to its webbed fellow is 

 quite irregular. The distal aspect of this bone forms a J shaped sur- 

 face in which articulates an irregidarly -shaped middle phalanx. The 

 distal phalanx is shorter than normal; the little finger is crooked. Sesa- 

 moid bones are present at the motacarpo-phalangeal joints of the 2nd, 

 3rd and 4th fingers as well as at the thumb and little fingers. 



Skiagraph B, (Plate XVI). RiyJit Foot shows the bony condition of 

 the 6 toes. The abnormal features are the 5th and 6th incomplete 

 metatarsals and the bony formation of the 5th and 6th to(!s. The 5th 

 metatareal arises fi-om the base of the 4th metatarsal and has no 

 tarsal articulation, but has a complete head which articulates with the 

 base of the two conjoined proximal phalanges of the 5th and 6th 

 digits. The 6th metatarsal has no articulating head but has a com- 

 plete tarsal articulation with the cuboid. The bones of the 5th and 6th 

 toes are formed by a proximal bone which has a single ba.se articulating 

 with the 5th metatarsal, and arising from this are two distinct and 

 separate heads which articulate with two irregularly shaped distal 

 phalanges, having pointed extremities. The peculiar bony conrlition of 

 this i)art .should be well marked, for a very similar condition appears 

 in other members of this pedigree. 



Left Foot. The bony condition is practically normal except the 

 marked crooking of the 4th and 5th toes, which is probably an aciiTiired 

 condition from b(5ot pressure. 



III. 3. William, unaffected, AcaA. 



III. 4. Ellen, unaffected, married III. 17, had issue IV. 1!)— 24, lives 

 at Widues. 



III. 5. Sarah, unaffected, married III. 18 (Oliver), brothc)- of III. 1, 

 had issue IV. 25 — 31, lives at Widnes. 



III. 6, 7, unaffected. 



III. 8, 0. Still-born, condition doubtful. 



