Non fumum ex fulgore, sed ex fumo dare lucem, Cogitat, ut speciosa dehine miracula promat.HORACE.The aim of this little work is, therefore, limited to the gathering of such facts and phenomena as may serve to throw light upon the nature of the magic powers with which man is undoubtedly endowed. Its end will be attained if it succeeds in showing that he actually does possess powers which are not subject to the general laws of nature, but more or less...