3. Bacon finally gives the objects with which Philosophy mainly has to deal. These objects contrast much with that which we derive from perception and experience. “In the summary which Bacon gives of what he conceives ought to be the objects of philosophical inquiry, are the following; and we select those which he principally dwells upon in his works: ‘The prolongation of life; the restitution of youth in some degree; the retardation of old age, and the altering of statures; the altering of features; versions of bodies into other bodies; making of new species; impression of the air and raising tempests; greater pleasures of the senses, &c.’” He likewise deals with objects such as these, and he seeks to direct attention upon whether in their regard the means could not be found to carry out their ends; in such powers we should be able to make some progress. “He complains that such investigations have been neglected by those whom he designates _ignavi regionum exploratores_. In his Natural History he gives formal receipts for making gold, and performing many wonders.”[104] Bacon thus does not by any means take the intelligent standpoint of an investigation of nature, being still involved in the grossest superstition, false magic, &c. This we find to be on the whole propounded in an intelligent way, and Bacon thus remains within the conceptions of his time. “The conversion of silver, quicksilver, or any other metal into gold is a thing difficult to believe, yet it is far more probable that a man who knows clearly the natures of weight, of the colour of yellow, of malleability and extension, of volatility and fixedness, and who has also made diligent search into the first seeds and menstruums of minerals, may at last by much and sagacious endeavour produce gold, than that a few grains of an elixir may so do.... So again a man who knows well the nature of rarefaction, of assimilation, and of alimentation, shall by diets, bathings, and the like prolong life, or in some degree renew the vigour of youth.”[105] These assertions are thus not as crude as they at first appear. In dealing with Medicine Bacon speaks amongst other things of maceration (_Malacissatio per exterius_)[106] and so forth.