Book excerpt: 2015 Reprint of 1960 Edition. Full facsimile of the original edition. Not reproduced with Optical Recognition Software. The "Novum Organum," full original title "Novum Organum Scientiarum" or 'new instrument of science', is a Bacon's landmark work scientific method. First published in 1620, the title is a reference to Aristotle's work "Organon," which was his treatise on logic and syllogism. Bacon outlines a new system of logic he believes to be superior to the old ways of syllogism. This is now known as the Baconian method.For Bacon, finding the essence of a thing was a simple process of reduction, and the use of inductive reasoning. In finding the cause of a 'phenomenal nature' such as heat, one must list all of the situations where heat is found. Then another list should be drawn up, listing situations that are similar to those of the first list except for the lack of heat. A third table lists situations where heat can vary. The 'form nature', or cause, of heat must be that which is common to all instances in the first table, is lacking from all instances of the second table and varies by degree in instances of the third table. Bacon's work was instrumental in the historical development of the scientific method. Includes Bacon's Essay on "Great Instauration," and "Preparative Toward a Material and Experimental History."