== Ummm  == 

 "are not themselves significantly consumed (though they may depreciate) in the production process" - isn't this the difference between "fixed capital" and "circulating capital"? The text gives the definition of fixed capital (which is what is usually denoted by K in the literature these days) but there's also circulating capital (generally referred to as "intermediate goods" now, more or less). Wouldn't a better definition be that it is goods produced with other goods which are not directly consumed (i.e. provide no utility in and of themselves)?