Sentence:  <WSD>Parsimony</WSD>, and not industry, is the immediate cause of the increase of capital. Industry, indeed, provides the subject which <WSD>parsimony</WSD> accumulates. But whatever industry might acquire, if <WSD>parsimony</WSD> did not save and store up, the capital would never be the greater. 
Meaning of the word marked with <WSD> tags:  Great reluctance to spend money unnecessarily.