5i8 



THE GRAMMAR OF SCIENCE 



consider change in position and develop a theory of the 

 motion of conceptual bodies without reference to the 

 special structures and special types of motion by which 

 we conceptualise change in phenomena. This branch of 

 science is termed Kinematics, or the Geometry of Motion, 

 and, on account of its fundamental importance, has been 

 somewhat fully discussed in our Chapter VI. It has 

 made very great advances in recent years, and not only 

 from the theoretical standpoint ; in cases of constrained 

 motion it has become an invaluable auxiliary in the 

 practical construction of machines.^ Closely allied to 



Kinematics, if not more properly a branch of them, we 

 have a science which deals with change in size and shape. 

 This is the Theory of Strains, and it has a wide applica- 

 tion in the conceptual description of many portions of 

 physics (p. 202). 



With this we complete our review of Abstract Science. 



1 See especially L. Burmester : Lehrbuch der K'inet?tatik, Bd. i., Leipzig, 

 1888 — a classical treatise. 



