I N S TIN CTIV E FACT OR S (^147)
c ompl ex, so th a t mo re th a n o ne of t h e in
stincts a re calle d o ut. T he resul ting ac tion
i s a pro duc t o f all ; h enc e w e ca n h ardly
secure sepa rat e, cl e an-c u t p a tte rns. F urth e r
m ore, o ur instinc tive ac tions b ecom e i n ter
pe ne tra te d, du rin g th e c ourse of in divi dual
experi enc e, wi th a c quire d a ct s, esp ecially
wi th h abi ts. Si nc e w e ra rely se e th e p ure
m anifesta tio n s of i nsti nctive a c ti on, th en, w e
c a nn ot tell exac tly h ow m any i nstinct s th ere
are.
Th o ugh we sh all no t presum e t o give a com
pl ete li st, we sh all p robably be safe i n rec og
nizing th e existe nc e of som e o f th e grea t
cla ss e s denote d by c urren t term s like self
p rese rvation ( va ri ously c alle d l oc om otion ,
ob taining food, sh el ter, play, sl eep ) ; rep ro
duction ; m a ting ( incl uding ac ts o f c oyne ss
a n d c oq ue try ) p rot ecti on o f th e yo ung ;
fligh t ; pugnacity ; rep ul sion.
Again, “ we m ay d o b es t to make a general
cla ssifica tion with reference to th e en d tha t
th e a c t subse rves, ra th e r th an to th e sp ecific
ch arac te r o f t h e pa rtic ul a r i ns tinc t. On e of
th e mo st c onvenien t divide s i nstinct s int o
th re e cl asse s : ( (^1) ) th ose whi ch preserv e th e
life a n d p rovide fo r th e welfa re o f th e in
dividual ” ; such a s fligh t, p ugnacity, h oarding,
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