

LITERATE EXPERIENCE. 



cclxiii 



than in his more abstruse works. An outline of it is 

 subjoined, (a) 



(a) The art of experimenting is, 



1. Production, 



2. Inversion. 



3. Variation. 

 -1. Simple. 



-1. Systematic. ^ 



_4. Translation. 



-2 Compound. 



1. By repetition. 



2. By extension. 



3. By compulsion. 



1. Of the matter. 



2. Of the efficient. 



3. Of the quantity. 



-1. From nature. 



1. To nature. 



2. To art. 



2. From art. 



1. To a different art. 



2. To a part of the 



same art. 



3. From experiment to 



experiment. 



2. Chance. 



A few moments consideration of each of these subjects 

 will not be lost. 



PRODUCTION is experimenting upon the result of the 

 experiment, and is either, 1st, by Repetition, continuing the 

 experiment upon the result of the experiment ; as Newton, 

 who, after having separated light into seven rays, proceeded 

 to separate each distinct pencil of rays : or, 2ndly, by 

 Extension, or urging the experiment to a greater subtlety, 

 as in the memory being helped by images and pictures 

 of persons : may it not also be helped by imaging their 

 gestures and habits ? or, 3rdly, by Compulsion, or trying an 

 experiment till its virtue is annihilated : not merely hunting 

 the game, but killing it ; as burning or macerating a load 

 stone, or dissolving iron till the attraction between the 

 iron and the loadstone is gone. 



INVERSION is trying the contrary to that which is mani 

 fested by the experiment : as in heating the end of a small 

 bar of iron, and placing the heated end downwards, and 



