iv " BUNSENIANA " 91 



Many thanks for your friendly invitation to stop with you. 

 I accept for myself with great pleasure ; my wife has not quite 

 decided yet what she will do. 



With kindest regards to your wife, 



Yours, 



H. HELMHOLTZ. 



PARIS (undated). 

 HONOURED FRIEND, 



I have come safely through my expedition in England, 

 Ireland, and Scotland, given my lecture in Dublin, spoken at 

 the Royal Society of Edinburgh, and ended up by staying 

 with Sir W. Thomson. Every moment of this entire time was 

 so filled up that I was quite unable to write the short notices 

 necessary for the completion of the Faraday Lecture for pub- 

 lication. To-morrow night we go to Berlin, and will get there 

 on Monday evening. Meanwhile the Editor of the Journal 

 of the Chemical Society has sent me a copy of the present text 

 with the request that I should revise it speedily. In any case 

 I will send it off from Berlin if I do not find a quiet moment 

 here to finish it off. Should it be necessary to get it through 

 very quickly in order to insert it in the June number, I beg 

 you to send me a post-card to Berlin to that effect. My time 

 has been so occupied ever since my lecture at the R.I., what 

 with preparing my next lecture and making appointments to 

 see people, that I have had no time to get through this revision. 



Once more, many and hearty thanks from my wife and myself 

 to you both for our delightful stay with you, and for the great 

 sacrifice of time you gave on my behalf. 



In true friendship, 



Yours, 



H. HELMHOLTZ. 



In 1 86 1, Helmholtz married our friend Anna 

 von Mohl, and their house in Heidelberg became the 

 resort of all that was best and intellectual, not only there, 

 but from all the world over. Helmholtz was certainly, 

 taking him altogether, the most wonderful man I ever 

 knew, and his character was as charming and simple 

 and his heart as kind as his intellect was great. He 

 was not merely an eminent savant, but a polished man 



