mi-: 



Fig. 57. 



n-w. The time first of the upper row articulate with the radius; the fourth responds 

 to the ulna. In the bonos of the lower mw. the //<// ;/H, ; I n-s|oiids to the metacarpal 

 of the thumb and tint of the ind- x ; the tnt) -.:/./ .- to tin- hitler only, the ox iniKjiunn 

 ami nuriiiirm to the im -taeai ] ;i!s of the medius, annuhiris, and little fiir_"-r. Tin- 

 piMforrn bom- and the euiieiform proce.-s of the unciform convert the posterior face of the 

 rarpns into a channel. 



_' Mi I'lrar/ms. The five metocorpals of Man are parallel to each other, and articulate 

 by tin ir MIJH rior extremities with the bones of the car- 

 l-y their inferior extremities with the phalaii_n -. 

 They are all concave in their middle portion, and 

 thickened at their ends. The metacarpal of the thumb 

 is the shortest and strongest. The others diminish in 

 volume fn-m the fourth to the first. 



:'.. Digital Region. Here we find five digits, each 



<ed of three bony columnettes, with the exception 



of the thumb, in which only the second and third pha- 



laiii:- at Tli-y aecreftM in length from the 



third to the first, and the third to the fifth. The first 



and second phalanges are small semicylindrical bones, 



sdiirhtly thickened at their extremities. The unguenl 



phalanges are constricted in their middle, and widened 



like a horse-shoe at their inferior extremity ; the palmar 



is roughened, the dorsal face smooth. 



ARTICLE V. POSTERIOR LIMBS. 



Each of these is divided, as already noted, 

 into four secondary regions : the pelvis, thigh, 

 l> 'i. mid. foot. 



PELVIS. 



The pelvis is a kind of bony cavity formed 

 by the union of the sacrum with two lateral 

 pieces, the coxte, which are consolidated with 

 each other in the inferior median line. The 

 deaoription of the sacrum having been already 

 given, it now remains to speak of the coxa. 



I'ALMAR SURFACE OF LEFT 



HI/MAX HANK. 



1, Scaphoid bone; 2, Semilunare ; 

 3, Cuneiform ; 4, Pisiform ; 5, 

 Trapezium ; 6, Groove in tra- 

 pezium for tendon of tiexor 

 carpi radialis; 7, Trapezoides; 

 8, Magnum ; 9, Unciform ; 10, 



10, The five metacarpal bones; 



11, 11, First row of phalanges; 

 1-J. 1-'. Second row; ].;. 1.;. 

 Third row ; 14, First phalanx 

 of the thumb; 15, Second and 

 last phalanx. 



A. Coxa. 



The coxa, also designated os iliacum, os inno- 

 i, is a very irregularly-shaped flat bone, 

 double (with its fellow on the opposite side), 

 iiiul iliixctnl obliquely from above to below and 

 In-fore to behind. It is contracted in its middle part, which presents exter- 

 nally an articular cavity, the cotyloid ; anteriorly, where it rests on the 

 urn, it becomes widened, as it also does in its posterior portion, which 

 is innVrted inwards to be united, on the median lino, with the bone of 



[jwisite side. 



It is divided, in the foetus, into three distfcy>t pieces, joined by cartilage 



in the centre of the cotyloid cavity, which the three concur in forming. 



Altli'iuoh they soon become consolidated into a single piece, it is customary 



-eribc them as so many separate bones by the names of ilium, pubis, and 



"m. 



1 1. 1 rM. The ilium, a flat and triangular bone, curved on itself, directed 

 obliijiu ly from above to below, before to behind, and within outwards, forms 

 the anterior portion of the coxa which corresponds with the sacrum, 

 the most considerable of the three divisions, and has two facet, lltrcc 

 uii'l three angles. 



