It is true indeed that the title of that 10th chapter,--namely, "The Inventory, or an enumeration and view of inventions already discovered and in use, with a note of the wants and the nature of the supplies",--has at first sight a considerable resemblance to the description of the contents of the second book of the ADVANCEMENT OF LEARNING,--namely, "A general and faithful perambulation of learning, with an inquiry what parts thereof lie fresh and waste, and not improved and converted by the industry of Man;... wherein nevertheless my purpose is at this time to note only omissions and deficiencies, and not to make any redargutions of errors," and so on. But an "enumeration of INVENTIONS" is not the same thing as "a perambulation of LEARNING;" and it will be found upon closer examination that the "Inventory" spoken of in VALERIUS TERMINUS does really correspond to one, and one only, of the fiftyone Desiderata set down at the end of the DE AUGMENTIS; viz. that INVENTARIUM OPUM HUMANARUM, which was to be an appendix to the MAGIA NATURALIS. See DE AUG. iii. 5. This will appear clearly by comparing the descriptions of the two. In the ADVANCEMENT OF LEARNING Bacon tells us that there are two points of much purpose pertaining to the department of Natural Magic: the first of which is, "That there be made a calendar resembling an Inventory of the ESTATE OF MAN, containing ALL THE INVENTIONS, BEING THE WORKS OR FRUITS OF NATURE OR ART, which are now extant AND OF WHICH MAN IS ALREADY POSSESSED; out of which doth naturally result a note what things are yet held impossible or not invented; which calendar will be the more artificial and serviceable if to every reputed impossibility you add what thing is extant which cometh the nearest in degree to that impossibility: to the end that by these optatives and essentials man's inquiry may be the more awake in deducing direction of works from the speculation of causes."