58 MEMOIR OF DR. DALTON, AND 



each other's method. Next day I read it to an audience of 

 about 150 or 200 people, which was more than were expected. 

 They gave a very general plaudit at the conclusion, and 

 several came up to compliment me on the excellence of the 

 introductory. Since that time I have scarcely written any- 

 thing ; all has been experiment and verbal explanation. In 

 general my experiments have uniformly succeeded, and I have 

 never once faltered in the elucidation of them. In fact, I 

 can now enter the lecture room with as little emotion nearly 

 as I can smoke a pipe with you on Sunday or Wednesday 

 evenings." 



In 1807 he gave a similar course of lectures in Edinburgh, 

 on which the following addressed to his friend, the Rev. W. 

 Jones, may be read with interest. 



Edinburgh, April I9th, 1807. 

 " Respected Friend, 



As the time I proposed to be absent is nearly expired, 

 and as my views have recently been somewhat extended, I 

 think it expedient to write you for the information of enquirers. 

 Soon after my arrival here I announced my intention by 

 advertisement of handbills ; I obtained introduction to most of 

 the professional gentlemen in connection with the college, and 

 to others not in that connection, by all of whom I have been 

 treated with the utmost civility and attention ; a class of eighty 

 appeared for me in a few days ; my five lectures occupied me 

 nearly two weeks ; they were finished last Thursday, and 1 

 was preparing to leave the place, and return by Glasgow, to 

 spend a week. But several of the gentlemen who had 

 attended the course represented to me that many had been 

 disappointed in not having been informed in time of my inten- 

 tion to deliver a course, and that a number of those who had 

 attended the first course would be disposed to attend a second. 

 I have been induced to advertise for a second, which, if it 

 succeeds, will commence on Wednesday, the 22nd, and be 

 continued daily, till the conclusion. This will detain me a 



