468 



to vary within considerable limits ; in one instance it was capable of 

 sustaining a weight of sixteen pounds; in the majorityof other cases it 

 could not support a pressure of more than three, four, or five pounds, 

 and sometimes it was not sufficiently strong to bear a weight of six 

 ounces. 



The second ligament to which I would call attention is a third acces- 

 sory slip to the capsule of the hip joint (Plate IV., fig. 2). I have usually 

 found this band springing from the upper and outer part of the tuber ischii ; 

 its fibres ran outwards, backwards, and a little upwards, crossing over the 

 groove which separates the acetabulum from the tuber ischii, and are 

 inserted into the posterior aspect of the neck of the femur about midway 

 between the trochanters ; a ridge sometimes exists in this position ; here 

 its fibres are inseparably united to those of the capsular ligament, although 

 comparatively distinct at the ischiatic attachment. This structure is 

 brought into view by raising the glutseus maximus, by reflecting the 

 sciatic vessels and nerves, cutting through and throwing down the qua- 

 dratus femoris ; and then, when we divaricate the gemellus inferior from 

 the obturator externus, it can usually be seen. Its lower fibres are traceable 

 along the upper edge of the tuber ischii, and sometimes are connected 

 with the origins of the hamstring muscles : it is separated from the origin of 

 the semimembranosus by the attachment of the quadratus femoris. Two 

 other accessory ligaments are recognised in connexion with the hip joint — 

 ilio-femoral and pubio-femoral — but this ischio- femoral fasciculus is 

 usually as distinct from the capsule as either of these, and is often much 

 stronger than the last-named; it protects the joint in rotation inwards. 



EXPLANATION OF PLATES 



TO ILLUSTRATE DR. MACALISTER's PAPER ON UNDESCRIBKD LIGAMENTS. 



Plate IV., Fig. I. Coraco-glenoid ligament: a, Acromion process; b, Long head of bi- 

 ceps tendon ; c, Coraco-glenoid ligament, a well-developed speci- 

 men ; d, Clavicle; e, Glenoid ligament. 

 ,, Fig. 2. Ischio-femoral accessorv ligament, an unusually developed example, 



right side of male subject. 



ILLUSTRATIONS OF D». MACALISTER's PAPER ON ANOMALOUS MYOLOGY. 



Plate V., Fig. 1. Rhombo-axoid muscle : a, Rhombo-axoid ; b, Splenitis capitis ; 



e, Serratus posticus superior ; Levator scapulas ; e, Rhomboideus 

 minor; f, Rhomboideus major. 



,, Fig 2. a. Mento-hyoid muscle; £, Digastric; c, Stylo-hyoid; d, Mylo- 



hyoid ; e, Stern o-mastoid ; Sterno-hyoid ; g, Omo-hyoid. 



Plate VI., Fig. 1. a, Azygos pharyngei ; b, Cephalo-pharyngeus ; c, Stylo-pharyn- 

 geus ; d, Superior Constrictor ; e, Middle Constrictor. 

 „ Fig. 2. Deep muscles of the front of the neck, the Scalenus anticus and 

 posticus having been removed ; a, «, Scalenus medius, cut and re- 

 flected ; b, Scalenus accessorius. 



Fig. 3. a, Crico-thyroideus posticus ; b, Crico-thyroideus ; c, Thyroid car- 

 tilage; d, Cricoid cartilage; e, Os hyoides. 



