hese statements would be misunderstood if they were taken to imply an allegation that in ancient science sense gives knowledge, while modern science excludes the material of sense} such an idea inverts the facts. But ancient science accepted the material of sense-material on its face, and then organized it, as it naturally and originally stood, by operations of logical definition, classification into species and syllogistic subsumption. Men either had no instruments and appliances for modifying the ordinary objects of observation, for analyz- ing them into their elements and giving them new forms and arrangements, or they failed to use those which they had. Thus in content, or subject-matter, the conclusions of Greek science (which persisted till the scientific revolution of the seventeenth century), were much closer to the objects of everyday experi- ence than are the objects of present scientific thought. It is not meant that the Greeks had more respect for the function of per- ception through the senses than has modern science