There is no occasion to dwell upon the extraordinary proportions which our accumulated knowledge would assume, if our sight could enjoy those extraordinary powers of extension, if it could perform simultaneously the functions of the telescope and the microscope. Science would march forward with the tread of a giant. What enormous progress would be made by chemistry if our eyes could penetrate into the interior of all bodies, beholding their molecules, estimating their relative volume, their arrangement, and the form and colour of their atoms. A glance would reveal to us secrets of chemical solutions such as the genius of a Lavoisier could not penetrate. Physics would contain no further mysteries for us, for we should know, by simply using our eyes, everything which we are now painfully striving to divine by reason, and by the aid of difficult and uncertain experiments. We should _see_ why and how bodies are warmed and acquire electricity. We should have the explanation of the mathematical laws in obedience to which the physical forces, light, heat, and magnetism are exercised. Our eyes would suffice for the solution of those physical and mechanical problems before which the genius of such men as Newton, Malus, Ampère, and Gay-Lussac stands still. We do not doubt that the superhuman being is endowed with sight thus marvellously perfect. We might carry this argument out in detail, applying it to all the other senses, but enough has been said to illustrate the exaltation and perfecting of those senses which man possesses only in their rudiments, in the favoured dwellers in a superior sphere. We will only add, that the result of such a degree of perfection of the senses is, that the superhuman being can move with a rapidity, of which light and electricity only can give us some notion, that is to say, that these perfected senses can be used at great distances, and with great promptitude. If the entire body of the superhuman being can transport itself with wonderful rapidity from one place to another, as we have already admitted, his senses can also act from, and at great distances. We do not think we can err in comparing the actions of the dwellers in the invisible world which we presume to investigate, with the phenomena of light and electricity. Does sex exist in the superhuman being? Assuredly not. The Christian religion defines its absence in the angel. The angel of the Christian creeds has the features of either man or woman, the mild face of a youth, or the pathetic beauty of a girl. Sex is suppressed, the individual is androgynous. Thus, too, it must be in the case of the superhuman being. The reciprocal affection which reigns among the blessed dwellers in the ether does not require diversity of sex.