XXXV111 



rose, and his friends knew that one was sure to be a welcome gift. Pure 

 Eau de Cologne he liked very much ; it was one of the few luxuries of the 

 kind that he indulged in ; musk was his abhorrence, and the use of that 

 scent by his acquaintance annoyed him even more than the smell of tobacco, 

 which was sufficiently disagreeable to him. The fumes from a candle or 

 oil-lamp going out would make him very angry. On returning home one 

 evening, he found his rooms full of the odious smell from an expiring lamp ; 

 he rushed to the window, flung it up hastily, and brought down a whole 

 row of hyacinth-bulbs and flowers and glasses. 



" Mr. Magrath used to come regularly to the morning lectures, for the 

 sole purpose of noting down for Mr. F. any faults of delivery or defective 

 pronunciation he could detect. The list was always received with thanks ; 

 although his corrections were not uniformly adopted, he was encouraged to 

 continue his remarks with perfect freedom. In early days he always lec- 

 tured with a card before him with Slow written upon it in distinct cha- 

 racters. Sometimes he would overlook it and become too rapid ; in this 

 case Anderson had orders to place the card before him. Sometimes he 

 had the word f Time ' on a card brought forward when the hour was nearly 

 expired." 



JEt. 48 (1840). 



Early in this year the sixteenth series of Experimental Researches ap- 

 peared. It was on the Source of Power in the Yoltaic Pile : — 1. Exciting 

 electrolytes, &c, being conductors of thermo and feeble currents ; 2. Inac- 

 tive Conducting Circles containing an electrolytic fluid ; 3. Active Circles 

 excited by solution of Sulphuret of Potassium. The seventeenth series 

 came a few days after. Also on the Source of Power in the Voltaic Pile 

 (continued) : 4. The exciting Chemical Force by temperature ; 5. The ex- 

 citing Chemical Force affected by dilution ; 6. Differences in the Order of 

 the Metallic Elements of Voltaic Circles ; 7. Active Voltaic Circles and 

 Batteries without metallic contact ; 8. Considerations of the sufficiency of 

 chemical action; 9. Thermoelectric evidence; 10. Improbable nature of 

 the assumed Contact Force. 



He gave three Friday discourses. 



The previous year, Dr. Hare, Professor of Chemistry in the University 

 of Pennsylvania, wrote his objections to Faraday's theoretical opinions on 

 Static Induction. At the end of Faraday's reply, he says: — "The paragraphs 

 which remain unanswered refer, I think, only to differences of opinion, 

 or else not even to differences, but opinions regarding which I have not 

 ventured to judge. These opinions I esteem of the utmost importance ; 

 but that is a reason which makes me the rather desirous to decline entering 

 upon their consideration, inasmuch as on many of their connected points I 

 have formed no decided notion, but am constrained by ignorance and the 

 contrast of facts to hold my judgment as yet in suspense. It is indeed to 

 me an annoying matter to find how many subjects there are in electrical 

 science on which, if I were asked for an opinion, I should have to say I 



