Full Idea
The task of natural science is to investigate the nature of a thing or substance, and to test hypotheses as to the constitution of that thing or substance.
Gist of Idea
Science investigates the nature and constitution of things or substances
Source
Harré,R./Madden,E.H. (Causal Powers [1975], 1.IV)
Book Reference
Harré,R/Madden,E.H.: 'Causal Powers: A Theory of Natural Necessity' [Blackwell 1975], p.17
A Reaction
This seems to suggest that science is only concerned with the very small, but it would include facts such as the dramatic change of a lump of uranium when it grows bigger.