IMPLEMENTS PECULIAR TO MAN. 145 



must always have had, instincts which afford 

 all that is required as a starting-ground for 

 advance in the mechanical arts. Few persons 

 have reflected on how much is involved in 

 the most purely instinctive acts, such as the 

 throwing of a stone, or the wielding of a 

 stick as a weapon of offence. Both these 

 simple acts involve the great principle of the 

 use of artificial tools. Even in the most 

 rudimentary form, the use of an implement 

 fashioned for a special purpose is absolutely 

 peculiar to Man, and arises necessarily and 

 instinctively out of the structure of his body. 

 The bodies of the lower animals are so 

 constructed that such implements as they 

 are capable of directing are all supplied in 

 the form of bodily organs. All effects which 



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