Table of contents
CHAPTER I ORGANIC BEHAVIOUR
CHAPTER II CONSCIOUSNESS
CHAPTER III INSTINCTIVE BEHAVIOUR
CHAPTER IV INTELLIGENT BEHAVIOUR
CHAPTER V SOCIAL BEHAVIOUR
CHAPTER VI THE FEELINGS AND EMOTIONS
CHAPTER VII THE EVOLUTION OF ANIMAL BEHAVIOUR
C. Lloyd Morgan
Animal Behaviour
ISBN: 9788892663473
Youcanprint Self-Publishing
CHAPTER I ORGANIC BEHAVIOUR
I.—Behaviour
in GeneralWe
commonly use the word “behaviour” with a wide range of meaning.
We speak of the behaviour of troops in the field, of the prisoner
at
the bar, of a dandy in the ball-room. But the chemist and the
physicist often speak of the behaviour of atoms and molecules, or
that of a gas under changing conditions of temperature and
pressure.
The geologist tells us that a glacier behaves in many respects like
a
river, and discusses how the crust of the earth behaves under the
stresses to which it is subjected. Weather-wise people comment on
the
behaviour of the mercury in a barometer as a storm approaches.
Instances of a similar usage need not be multiplied. Frequently
employed with a moral significance, the word is at least
occasionally
used in a wider and more comprehensive sense. When Mary, the nurse,
returns with the little Miss Smiths from Master Brown’s birthday
party, she is narrowly questioned as to their behaviour; but
meanwhile their father, the professor, has been discoursing to his
students on the behaviour of iron filings in the magnetic field;
and
his son Jack, of H.M.S.
Blunderer,
entertains his elder sisters with a graphic description of the
behaviour of a first-class battle-ship in a heavy sea.The
word will be employed in the following pages in a wide and
comprehensive sense. We shall have to consider, not only the kind
of
animal behaviour which implies intelligence, sometimes of a high
order; not only such behaviour as animal play and courtship, which
suggests emotional attributes; but also forms of behaviour which,
if
not unconscious, seem to lack conscious guidance and control. We
shall deal mainly with the behaviour of the animal as a whole, but
also incidentally with that of its constituent particles, or cells;
and we shall not hesitate to cite (in a parenthetic section) some
episodes of plant life as examples of organic behaviour.Thus
broadly used, the term in all cases indicates and draws attention
to
the reaction of that which we speak of as behaving, in response to
certain surrounding conditions or circumstances which evoke the
behaviour. The middy would not talk of the behaviour of his ship as
she lay at anchor in Portland harbour; the word is only applicable
when there is action and reaction as the vessel ploughs through a
heavy sea, or when she answers to the helm. Apart from gravitation
the glacier and the river would not “behave in a similar manner.”
Only under the conditions comprised under the term “magnetic field”
do iron filings exhibit certain peculiarities of behaviour. And so,
also, in other cases. The behaviour of cells is evoked under given
organic or external conditions; instinctive, intelligent, and
emotional behaviour are called forth in response to those
circumstances which exercise a constraining influence at the moment
of action.It
is therefore necessary, in a discussion of animal behaviour, that
we
should endeavour to realize, as far as possible, in every case,
first, the nature of the animal under consideration; secondly, the
conditions under which it is placed; thirdly, the manner in which
the
response is called forth by the circumstances, and fourthly, how
far
the behaviour adequately meets the essential conditions of the
situation.II.—Behaviour
of CellsFrom
what has already been said it may be inferred that our use of the
term “behaviour” neither implies nor excludes the presence of
consciousness. Few are prepared to contend that the iron filings in
a
magnetic field consciously group themselves in definite and
symmetrical patterns, or that sand grains on a vibrating plate
assemble along certain nodal lines because they are conscious of
the
effects of the bow by which the plate is set in sounding vibration.
But where organic response falls under our observation, no matter
how
simple and direct that response may be, there is a natural tendency
to suppose that the behaviour is conscious; and where the response
is
less simple and more indirect, this tendency is so strengthened as
to
give rise to a state of mind bordering on, or actually reaching,
conviction. Nor is this surprising: for, in the first place,
organic
responses, even the simplest, are less obviously and directly
related
to the interplay of surrounding circumstances; and, in the second
place, they are more obviously in relation to some purpose in the
sense that they directly or indirectly contribute to the
maintenance
of life or the furtherance of well-being. Now where behaviour is
complex and subserves an end which we can note and name, there
arises
the supposition that it may well be of the same nature as our own
complex and conscious behaviour.
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