14 



'The people never heard of nerves, nor 

 ever dreamed it was a disease, till they 

 were taught by professional men ; now the 

 man who would venture to tell them it was 

 nonsense, would be reckoned mad. So 

 says the professor ; the parson says so too ; 

 and who dare speak or think after that ? 



You must not take the bark off the trees, 

 the gardener says it will kill them ; they 

 will all be burnt alive by the heat of sum- 

 mer, and starved to death by the cold of 

 winter. 



Another great bar to discovery is the 

 vanity and self-conceit of men ; who think- 

 ing themselves superior beings, despise 

 nature, and refuse to be taught by her. 

 Anxious to outstrip her, wherever they see 

 an effect, they leave her path, and, always 



