916 PRINCIPAL SIR WILLIAM TURNER ON 
unossified, in the other a nodule of bone 3 by 24 inches was concealed in the 
cartilaginous distal carpales.* | 
Carpo-MrracaRPAL FORMULA. 
My Miv Miii Mii Mi pollex 
No Aceh 
Sar 
Cs + Ca C3 Co Carpale1 
% VA Os centrale? | 
Ney 
Ulnare Intermedium Radiale 2 
Pisiform of ~ ! 
Ulna Radius 
In the human hand, where the metacarpals are enveloped by the common integu- 
ment of the palm, and the phalanges, constituting the skeletons of the free digits, 
have a separate covering of skin for each digit, it is customary to regard the meta- 
carpals as belonging to the palm and to dissociate them from the digits proper. In the 
Cetacea, again, both metacarpals and phalanges have a common tegumental covering, 
and each digit consists of both its metacarpal and phalangeal elements. The formula 
may be represented as follows : 
Minimus. Annularis. Medius. Index. Pollex. 
Phg3 Phg Ph3 or 5 Ph4or3 Phe ori 
The two hands were not uniform in the number of phalanges in the pollex, index, and 
medius. The length of the metacarpo-phalangeals was obtained by placing the bones 
of each digit in order, allowing intervals between them to represent the thickness. of the 
intermediate joints, the size of the intervals being estimated from the scale on the 
photographs of the digits taken by Mr Epwarps. The metacarpo-phalangeals of the 
pollex measured 11 inches; index 2 feet 9 inches; medius 3 feet 54 inches ; annularis 
2 feet 33 inches; minimus 2 feet. The pollex therefore was the shortest and the 
medius was much the longest digit. : 
As regards the length and general bulk of the metacarpals, My was the biggest, and 
the others in order as follows: Mii, Miy, My, Mi. The ends of the bones were more 
expanded than the shafts, they were rough, and no separate epiphyses were seen. The 
phalanges in each digit diminished in size from the first to the terminal, and the free 
end of the last was usually attenuated. The metacarpals and some of the phalanges at 
the proximal ends showed indications of an epiphysis almost completely fused with the 
shaft of the bone. 
Gasco figured the skeleton of the pectoral limb in the Taranto specimen ; the bones 
* IT may refer to my memoirs in Proc. Roy. Soc. Edin., vol. xxix. p. 687 and vol. xxx. p. 508, also to my book on 
Marine Mammals (op. cit.), for figures and descriptions of the manus in the Odontoceti. 
