THE FORE-LIMB: SUMMARY 47 



nor is it going one whit farther than the ordinarily gross 

 facts of demonstrable anatomy warrant. Could we 

 imagine an isolated human arm to be the only relic 

 extant of the human race, and were this arm to be dis- 

 sected by some superanatomist, he would find the arrange- 

 ment of its skeletal and muscular elements matched 

 very nearly in the Giant Apes and Old- World Monkeys, 

 in some of the lowest Lemurs, and some primitive In- 

 sectivora, as well as in the more unspecialized Reptiles 

 and some Amphibians ; but he would search in vain for 

 its like among the remaining mammalian groups. 



