BlvISHA MITCHELI^ SCIENTIFIC SOCIETY. 21 



tending- between this muscle and the anterior division 

 of the g-hiteus maximns. This fascia is closely bound 

 to the underlying- g-liiteits niedms, and is continuous 

 with the dense fascia covering- the sacrum dorsally. 



The muscle is inserted by a fascia {fascia lata), 

 which covers the external and anterior surface of the 

 thigh, and dipping in between the vastus cxterniis and 

 the adductor, is attached to the outer surface of the fe- 

 mur, along- nearly its whole length. 



The tensor vag'iiiae near its origin, is inseparably 

 connected (in cases at least) with the g-liitens viediiis. 

 It is also directly continuous posteriorly with the an- 

 terior division of th.Q gluteus maximus, the two actually 

 forming a sing-le muscle. 



S3'^onym3^ Couturier et droit interne plus t\v^fas- 

 cialis, S,-D., vol. II, p. 402, p. \^Z\ tensor vaginae 

 femoris, M., p. 154; ditto, G. & T., p. 39. 



Gluteus maximus. The muscle is divided into two 

 portions. The anterior arises directl}^ by muscle fi- 

 bres from the transverse process (lateral mass) of the 

 third sacral vertebra, and the transverse process of 

 the first caudal vertebra, and from the fascia covering- 

 the gluteus medius and the sacral region. It is in- 

 serted into the femur, just below the great trochanter, 

 by means of the extreme upper end of the fascia lata, 

 and by a few independent fibrous strands, noticeable in 

 old subjects. 



The posterior part arises directly by muscle fibres 

 from the transverse processes of the first two caudal 

 vertebrae. It is inserted into the fascia lata. 



It is only in young subjects that the two parts of the 

 muscle are distinct at the orig-in. In older subjects, 

 the muscle has a continuous origin from the sacral fas- 

 cia, sacrum and caudal vertebrae. 



