[89] for after some being or other made the two substances of water and earth to be the one dry and the other solid, and mingling the two together, for they were easily dissoluble and corruptible, made a third substance to be on the confines of the two, which is called clay, he has never ceased from dissecting this into small portions, giving its own appropriate figure to each of the fragments, in order that they might be very well compacted together, and very suitable to the objects for which they were intended. For in this way what was being made was sure to be very easily perfected.