LAWS OF BONE ARCHITECTURE 



279 



and the group of smaller rotator muscles are inserted: at the 

 lesser trochanter, where the ilio-psoas muscles are inserted : and at 

 the distal part of the femur, where the gastrocnemius and adduc- 

 tor magnus muscles are inserted. It is very important to note 

 that at these ])oints of concentration of muscle action the factors 



Fig. 28 Frontal longitudinal mid-section of upper femur. Dissecting room 

 specimen. Taken from a femur picked up at random in the dissecting room. 

 The analytic description given in the text for figure 21, applies to this section. 

 (Natural size.) 



