Manchester Memoirs, Vol. lix. (191 5), No. 12. 3 



were procured. The fee was half-a-guinea for the course, 

 or one shilling per lecture, We have no information 

 relating to the success or otherwise of this first attempt. 



1'he next syllabus dates four years later, and the 

 charge is reduced for the set of twelve lectures to 5s. 

 This syllabus is reproduced on PL I. Dalton made it 

 a rule to give a balance-sheet relating to his lectures and 

 the one for these lectures, with its wrong addition, is 

 shown on PL II He has also recorded the names of the 

 subscribers and the attendances at his lectures. The list 

 includes 80 names ; the attendance at each lecture varied 

 -considerably, the average being about 20. 



In 1793, Dalton, now 27 years of age, came to Man- 

 chester to teach Mathematics and Natural Philosophy at 

 the Manchester Academy, where he remained as tutor for 

 six years. 



In a letter to his brother Jonathan, dated "6th month, 



*3> l 796y" ne wrote : — 



" I have had some thoughts of delivering a course 

 of lectures at Kendal this summer, as far as the 

 apparatus there would admit and what additional 

 might be made for the occasion. About 6 Lectures 

 •on Chemistry and 6 on the other branches would be 

 my plan. I imagine you have had none lately. Twenty 

 subscribers at Haifa Guinea would be sufficient induce- 

 ment to commence. Tickets to admit a Gentleman 

 and Lady, or two Ladies ; Single Lectures, 1/6. 

 Thou may please to mention it to one or two to see 

 how it is likely to take, and let me know by the end 

 of the month, as I should wish to know before I quit 

 this place. I do not however wish to press the subject ; 

 nor to engage myself absolutely." 

 The lectures were arranged. In a pocket-book giving 



details of his summer expenses to Kendal he records that 



