Xll CONTENTS. 



PAGE 



crimiuative sensibility : Weber's law, 533. Fecbuer's interpreta- 

 lion of Ibis as tbe psycbo-pbysic law, 537. Criticism tbereof, 545. 



CHAPTER XIV. 

 Association, 550 



Tbe problem of tbe connection of our tbougbts, 550. It 

 depends on mecbanical conditions, 553. Association is of objects 

 tbougbt-of, not of ' ideas,' 554. Tbe rapidity of association, 557. 

 Tbe ' law of contiguity,' 561. Tbe elementary law of association, 

 566. Impartial redintegration, 569. Ordinary or mixed associa- 

 tion, 571. Tbe law of interest, 572. Association by similarity, 

 578. Elementary expression of tbe difference between tbe three 

 kinds of association, 581. Association in voluntary tbougbt, 583. 

 Similarity no elementary law, 590. History of tbe doctrine of 

 association, 594. 



CHAPTER XV. 

 The Perception of Time, 605 



Tbe sensible present, 606. Its duration is tbe primitive time- 

 perception, 608. Accuracy of our estimate of sbort durations, 

 Gil. We bave no sense for empty time, 619. Variations of our 

 lime-estimate, 624. Tbe feeling of past time is a present feeling, 

 627. Its cerebral process, 632. 



CHAPTER XVI. 



Memory, 643 



Primary memory, 643. Analysis of the phenomenon of mem- 

 ory, 648. Retention and reproduction are both caused by paths 

 of association in tbe brain, 653. Tbe conditions of goodness in 

 memory, 659. Native retentiveness is unchangeable, 663. All im- 

 provement of memory consists in better thinking, 667. Other con- 

 ditions of good memory, 669. Recognition, or tbe sense of famil- 

 iarity, 673. Exact measurements of memory, 676. Forgetting, 

 679. Pathological cases, 681. Professor Ladd criticised, 687. 



