distinguishes them from bodies that are barely fluid. For these, as such, require not near so brisk an agitation, as is wont to be necessary to make bodies deserve the name of hot. Thus we see that the particles of water in its natural (or usual) state, move so calmly, that we do not feel it at all warm, though it could not be a liquor unless they were in a restless motion; but when water comes to be actually hot, the motion does manifestly and proportionably appear more vehement, since it does not onely briskly strike our organs of feeling, but ordinarily produces store of very small bubbles, and will melt butter or coagulated oyl, cast upon it, and will afford vapours, that, by the agitation they suffer, will be made to ascend into the air. And if the degree of Heat be such as to make the water boil, then the agitation becomes much more manifest by the confus'd motions, and waves, and noise, and bubbles, that are excited, and by otherobvious
