Manchester Memoirs, Vol. lix. (191 5), No. VA, 5 



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before the lecture Davy and Dalton went to the theatre. 

 Dalton read the whole lecture to Davy, who was in the 

 furthest corner of the room. Then Davy read the lecture 

 and Dalton was the audience, and then they criticized 

 each other's methods. Next day he gave the lecture to 

 an audience of 150 and was complimented on his debut. 

 After this he scarcely wrote anything, all being experi- 

 ment or verbal explanation. This seems to have been 

 his usual plan with all his lectures. 



On returning to Manchester he gave to the Literary 

 and Philosophical Society, on February 24, 1804, " A 

 review and illustration of some principles in Mr. Dalton's 

 Course of Lectures on Natural Philosophy at the Royal 

 Institution in January, 1804." This was not published; 

 this review was probably intended to fill up what would 

 otherwise have been a blank evening. 



It is unfortunate that we have no record of his 1804 

 lectures, which he states contained his views on certain 

 primary laws. He left a statement for publication in the 

 Journal of the Royal Institution, but he was not informed 

 whether this was done. I have not been able to trace this. 



1805 



After returning from London Dalton decided to give 

 lectures in Manchester and issued the following pre- 

 liminary statement : — 



PROSPECTUS 



of a ?i intended course of 



ICcctuvcs on flat lira I $hilosophn 



LIN MANCHESTER, 

 JOHN DALTON. 

 In a populous town like this, where the Arts and 

 Manufactures are so intimately connected with various 



