354 



MERISTIC VARIATION. 



[PART i. 



having their normal insertions. The toes 1 and 2 were supplied by the same flexor 

 ten. lun which bifurcates and passes to be inserted into the ultimate phalanx ot each 



/ 8 !/ 

 FIG. 1<>3. Foot of No. 519. (After ATHOL JOHNSON.) 



by a separate slip. The vinculum by which it is attached is common to the two 

 bones. JOHNSON, ATHOL A., Trans. Path. Soc., ix. 1858, p. 4'27, jli. 



.")20. Malt- infant having supernumerary toes on the left foot. The tarsus and meta- 

 tarsus were abnormally wide. The hallux appeared externally to be divided into 

 two. This duplicity was most marked in the second phalanx and appeared in a 

 slight infolding of the skin. The nail also shewed traces of duplicity. Next to the 

 hallux were two toes which were bent upwards and inwards. Of these the one 

 oveilay thu other. The uppermost was found after excision to have two sets of 

 phalangeal bones enclosed in the same skin; these two articulated with a single 

 metatarsal bone. The lower toe was thought by BLASIDS to represent the digit II. 

 Next to this there was a rudimentary digit with a slightly developed nail. After 

 excision it was found that this toe contained a cartilaginous basis which was partly 

 segmented into two phalanges and articulated with a metatarsal. External to this 

 rudimentary toe were three normal toes, representing as BLASICS supposes, the 

 digits III, IV and V. Kxternal to the putative V was another digit of the same size 

 and -liu]>r. DI.ASIUS, v. Siebolil'.t Jour. f. Gebiirtxh., xin. 1834, p. 131, figs. 1 and 

 2 ; figures copied in AHLFELD, Missb. d. Mensch., Taf. xx. fig. 11. [This foot appears 

 to contain parts of ten digits.] 



r21. Child having polydactyle hands as follows. In each hand the fingers were 

 webbed to the tips. < arh minimus having an extra nail. In the right hand the 

 pollex was triplicate, having three sets of phalanges and three nails, the whole being 

 in a common integument. In the left hand the pollex was duplicate, having two 

 -ets of phalanges webbed together and two nails. Each member thus formed a 

 prehensile paw. In right foot little toe webbed to next toe. Some (not all) of 

 brotheis and sisters had similar hands: father and grandfather had similar hands: 

 mother and grandmother normal. HARKKK, J., Lmu-i't, }*<'>'> \'2), p. HS'.t, ji ; /. 



;,)') The following are other examples of irregular polydactylism : MORAND, Mem. 



1, . Set. Paris, 177(1. p. i:v.i, figs, s and 9. (The same redescribed from Morand's 



figure by DELPLANQi i , Etudes T(ratoL, n. l>nuai. lsr,!l. p. t'>7, PI. v. ; and again by 



LAVOCAT. M''m. Ac. Ssi. T<niln^, v. Isya. p. -_>s]. l'|. i., who takes a different view.) 



t.i;ri;i:i:. Mi'm. Ac. Sci. l'' : t., Ser. vn. Tom. 11. No. '> (tig. copied in Hull. Ac. Sci. 

 1'i't., xv. 1*71, tig. I), and by AHLFELI>, Mi*l>. <!. M, />.<, !/.. I'l. xx. fig. 20). 



( .1:1 BEB, Hull. Ac. Sci. I'i't., xv. 1871, p. 367, figs. 4 and 5. 



(ii CO, /.''.. I'l. xxvi. tigs. 811. 



FRORii:r, AY//r Notiet n. .(v.. \\Yimar, No. 67, ls:is, iv. p. 8, figs. 4 8 (very brief 

 account of important case, copied by Ani,ri-:u> and others). 



I 'r CAUROI, Jinn-. </.< Xr<ir<i*. H\'.u\ Ipub. K'.'.iT), ]>. si (quoted first by Morand, 

 afterwards wrongly quoted by many writers. l>wn,in, Man. Hunt. X. II. S., iv. 



