his writing. (4) The purpose of inspiration is practical; the inspired men are used of God to give guidance in belief and duty by declaring the word and will of God as bearing on human life. (5) As revelation is progressive, inspiration does not exclude defects in doctrine and practice in the earlier stages and their correction in the later stages of development. (6) As the progressive revelation culminates in Christ, so He possesses fullest inspiration; and it varies in others according to the closeness of their contact, and intimacy of their communion with Him. (7) As the primary function of Christ is redemptive, so the inspiration of the Bible is directed to make men “ wise unto salvation.” (8) It is the presence and influence in the souls of men of the same Spirit of God as inspired the Scriptures which makes the Bible effective as a means of grace; and only those who yield themselves to the Spirit of God have the witness in themselves that the Bible conveys to them the truth and the grace of God.
In addition to the books mentioned, see: A. B. Bruce, The Chief End of Revelation (1881); C. A. Briggs, The Bible, the Church, and the Reason (1892); W. N. Clarke, The Use of the Scriptures in Theology (1906); H. E. Ryle, The Canon of the Old Testament (1892); B. F. Westcott, A General Survey of the History of the Canon of the New Testament (7th ed., 1896); W. Sanday, Inspiration (grd ed., 1896); A. B. Davidson, article “ Prophecy ” in Hastings's Bible Dictionary, iv.; A. E. Garvie, “ Revelation" in Hastin s's Bible Dictionary (extra volume). (A. G.*)
INSTALLATION, the action of installing or formally placing some one in occupation of an office or place. The med. Lat. install are meant literally “ to place in a seat or stall ” (stallurn), and the word, as now, was particularly used of the ceremonial induction of an ecclesiastic, such as a canon or prebendary, to his stall in his cathedral choir. Similarly knights of an order of chivalry are ceremonially led to their stalls in the chapel of their order. The term is transferred to any formal establishment in office or position. From a French use of installer and installation, the word is frequently applied in a transferred sense to the fixing in position and making ready for use of a mechanical, particularly electrical, apparatus or plant.
INSTALMENT (for earlier stallrnent or estallnient, from Fr. estaler, to fix, arrange; the change is probably due to the influence of the verb “ install ”), the payment of a sum of money at stated intervals and in fixed portions instead of in a lump sum; hence the sums of money as they fall due at the periods agreed upon. For the system of purchase by deferred payments or instalments see HIRE-PURCHASE AGREEMENT.
INSTERBURG, a town in the kingdom of Prussia, situated at the point where the Angerapp and Inster join to form the Pregel, S7 m. E. of Konigsberg by the railway to Eydtkuhnen, and at the junction of lines to Memel and Allenstein. Pop. (rgoo) 27,787. It has four Evangelical churches, of which the town church is celebrated for its fine wood carvings, a Roman Catholic church, a synagogue, several schools and a park. Besides flax-spinning and iron-founding, Insterburg has manufactures of machinery, shoes, cement, leather and beer, along with a considerable trade in cereals, vegetables, flax, linseed and wood, while horse-breeding is extensively carried on in the neighbourhood. Close to the town lies the demesne of Georgenburg, with an old castle which formerly belonged to the Teutonic order. Insterburg, the “ burg ” on the Inster, was founded in the I4th century by the knights of the Teutonic order. Having passed to the mar graves of Brandenburg, the village which had sprung up round the castle received civic privileges in 1583. During the next century it made rapid advances in prosperity, partly owing to the settlement in it of several Scottish trading families. In 1679 it was besieged by the Swedes; in 1690 it suffered severely from a fire; and in 1710-1711 from pestilence.
See Tows, Urkunden zur Geschichte ries Hauptarnts Insterburg (lnvst., 1895-1897, 3 parts); and Kurze Chronik der Stadt Insterburg (Komgsberg, 1883).
INSTINCT. It is in the first place 'desirable to distinguish lgegween the word “ instinct ” (Lat. instinct us, from instinguere, to incite, impel) as employed in general literature and the term “ instinct ” as used in scientific discourse. The significance of the former is somewhat elastic, and is in large measure determined by the context. Thus in social relationships we speak of “instinctive” liking or distrust; we are told that the Greeks had “ instinctive ” appreciation of art; we hear of an instinct of reverence or “instinctive” beliefs. We understand what is meant and neither desire nor demand a strict definition. But in any scientific discussion the term instinct must be used within narrower limits, and hence it is necessary that the term should be defined. There are difficulties, however, in framing a satisfactory definition. That given by G. I. Romanes in the oth edition of the Encyclopaedia Britannica runs as follows: “ Instinct is a generic term comprising all those faculties of mind which lead to the conscious performance of actions that are adaptive in character but pursued without necessary knowledge of the relation between the means employed and the ends attained.” This has been criticized both from the biological and from the psychological standpoint. From the biological point of view the reference of certain modes of behaviour, termed instinctive, to faculties of mind for which “instinct” is the generic term is scarcely satisfactory; from the psychological point of view the phrase “ without necessary knowledge of the relation between the means employed and the end attained ” is ambiguous. (See INTELLIGENCE or ANIMALS.) In recent scientific literature the term is more frequently used in its adjectival than in its substantive form; and the term “ instinctive ” is generally applied to certain hereditary modes of behaviour. Investigation thus becomes more objective, and this is a distinct advantage from the biological point of view. It is indeed sometimes urged that instinctive modes of behaviour should be so defined as to entirely exclude any reference to their psychological concomitants in consciousness, which are, it is said, entirely inferential. But as a matter of fact no small part of the interest and value of investigations in this field of inquiry lies in the relationships which may thereby be established between biological and psychological °°"s"'°"interpretations. Fully realizing, therefore, thedilflculty fggzoml of finding and applying a criterion of the presence or absence of consciousness, it is none the less desirable, in the interests of psychology, to state that truly instinctive acts (as defined) are accompanied by consciousness. This marks them off from such reflex acts as are unconsciously performed, and from the tropisms of plants and other lowly organisms. There remains, however, the difficulty of finding any satisfactory criterion of the presence of consciousness. We seem forced to accept a practical criterion for purposes of interpretation rather than one which can be theoretically defended against all adverse criticism. We have reason to believe that some organisms pront by experience and show that they do so by the modification of their behaviour in accordance with circumstances. Such modihcation is said to be individually acquired. To profit by individual experience is thus the only criterion we possess of the existence of the conscious experience itself. But if hereditary behaviour is unaccompanied by consciousness, it can in no wise contribute to experience, and can afford no data by which the organism can profit. Hence, for purposes of psychological interpretation it seems necessary to assume that instinctive behaviour, including the stimulation by which it is initiated and conditioned, affords that naive awareness which forms an integral part of what may be termed the primordial tissue of experience.
We are now in a position to give an expanded definition of instinctive behaviour as comprising those complex groups of co-ordinated acts which, though they contribute to experience, are, on their first occurrence, not determined by individual experience; which are adaptive and tend to the well-being of the individual and the preservation of the race; which are due to the co-operation of external and internal stimuli; which are similarly performed by all members of the same more or less restricted group of animals; but which are subject to variation, and to subsequent modification under the guidance of individual experience.,