OBSERVATION AND EXPEIIIMENT. 39 



ence than by their verified dependence on verified facts. 

 Now the most puissant instrument of verification is the 

 Experimental Method which, by a process of elimination and 

 exclusion, directly interrogates Nature. 



You thus perceive that time is not likely to hang heavy 

 on our hands, while at the coast ; there is enough to do and 

 to enjoy. Dr Johnson said that he who would acquire a 

 pure English style must give his days and nights to Addison. 

 I have some doubts whether the prescription is likely to 

 be followed, or, if followed, likely to effect its purpose ; but 

 its language may be borrowed to suit my turn. He who 

 would learn the exquisite delights Nature has for those 

 who ardently pursue her, and would acquire a deep sense 

 of reverence and piety in presence of the great and 

 unfathomable mysteries which encompass Life, must give 

 his mornings to laborious searchings on the rocks, his 

 afternoons to patient labour with the Microscope. 



