174 THE ARTISTIC ANATOMY OF ANIMALS 



of its insertion into the last-mentioned, in some cases, that 

 it is also designated by the name of dorso-cpitrochlear 

 muscle.* 



Muscles of the Forearm 



Before commencing the special examination of each of 

 the muscles of this region, it is absolutely indispensable to 

 consider their general arrangement, and to determine very 

 clearly how we should study them. We are too well con- 

 vinced of the importance of this preliminary examination 

 to dismiss it without entering rather fully into it. Indeed, 

 the region on the myological study of which we are now 

 entering is, unquestionably, one of the most complicated 

 with which we have to deal. We know besides, in regard 

 to the study of the forearm in man, how much a definite 

 method is necessary in order that the arrangement of the 

 muscles of this region be fixed in the memory, and that we 

 are unable to obtain this result otherwise than by grouping 

 the twenty muscles which constitute it in clearly defined 

 regions. 



We also know that these muscles are first studied with the 

 forearm in the position of supination, and that it is only 

 when they are well known after having considered them in 

 this position that we are able to analyze and comprehend 

 their forms when it is in pronation. 



Now, as we have pointed out in the section on osteology 

 (see p. 34), the forearm in quadrupeds is always in the 

 position of pronation. Should we, then, in order to main- 

 tain the symmetry with human anatomy, first study the 

 forearm in the position of supination ? Evidently not. 

 Besides the fact that this would in some cases be impos- 

 sible since — as in the horse, for example — the radius and ulna 



* L. Testut, ' Anomalies musculaires chez Thomme expliquees par 

 I'anatomie comparee,' Paris, 1884, p. 118. A. F. Le Double, ' Traite 

 des variations dn systeme musculaire de I'homme et de leur signification 

 au point de vue de I'anthropolo.Erie zoologique,' Paris, 1897, t. i., p. 203. 

 Edouard Cuyer, ' Anomalies musculaires ' (Bulletins de la Socicte Anthro- 

 pologique, Paris, 1893). 



