INSTINCT 19 



whole theory ought not at once to be rejected on this 

 score. 



Every instinct must, by my theory, have been 

 acquired gradually by slight changes (illegible) of 

 former instinct, each change being useful to its then 

 species. Shamming death struck me at first as 

 remarkable objection. I found none really sham 

 death 1 , and that there is gradation; now no one 

 doubts that those insects which do it either more or 

 less, do it for some good, if then any species was led 

 to do it more, and then (?) escaped &c. &c. 



Take migratory instincts, faculty distinct from 

 instinct, animals have notion of time, like savages. 

 Ordinary finding way by memory, but how does 

 savage find way across country, as incompre- 

 hensible to us, as animal to them, geological 

 changes, fishes in river, case of sheep in Spain 2 . 

 Architectural instincts, a manufacturer's employee 

 in making single articles extraordinary skill, often 

 said seem to make it almost (illegible), child born 

 with such a notion of playing 3 , we can fancy 

 tailoring acquired in same perfection, mixture 

 of reason, water-ouzel, taylor-bird, gradation of 

 simple nest to most complicated. 



Bees again, distinction of faculty, howtheymake 

 a hexagon, Waterhouse's theory 4 , the impulse to 

 use whatever faculty they possess, the taylor-bird 

 has the faculty of sewing with beak, instinct impels 

 him to do it. 



Last case of parent feeding young with different 

 food (take case of Galapagos birds, gradation from 



1 The meaning is that the attitude assumed in shamming is not 

 accurately like that of death. 



2 This refers to the transandantes sheep mentioned in the MS. of 1844, 

 as having acquired a migratory instinct. 



3 In the Origin, Ed. i. p. 209, vi. p. 321, Mozart's pseudo-instinctive 

 skill in piano-playing is mentioned. See Phil. Trans., 1770, p. 54. 



4 In the discussion on bees' cells, Origin, Ed. i. p. 225, vi. p. 343, the 

 author acknowledges that his theory originated in Waterhouse's obser- 

 vations. 



22 



