THE REVISION OF THE ECHINI 109 



as a collection for instruction it stands unrivaled in its 

 preparations and the quality of material. Of course it is 

 not pretty to look at. 



I then went to Bonn, paid a visit to Max Schultze and 

 Troschel, who both want to be remembered to father; 

 met there Ehrenberg on a visit to his son-in-law, Pro- 

 fessor Han stein, the botanist. At Frankfort the Museum 

 of the Zoological Society is really good and very large 

 and exceedingly well arranged in some points. I was 

 very glad to see it, though I found nothing specially 

 new there, except Riippel's things from Red Sea. The 

 Zoological Garden is very pretty ; it is small, but being 

 old, the trees are large and the effect very good, the 

 animals being well taken care of. I shall wait here to- 

 day for further news, and if I cannot go to the scene 

 of mines, will paddle back to Switzerland and join my 

 family, who will be disconsolate at my early return. This 

 has been to me the most interesting of all my trips. 



Agassiz at this time bore a striking resemblance to 

 Bismarck, and this led to an amusing incident at the 

 hotel in Mannheim. Here he was conscious of being 

 treated with very unusual consideration, but not until 

 his departure for the mines at Saarbriicken, when the 

 landlord refused to give him his bill, did he discover 

 that he was mistaken for the Chancellor. In vain he ex- 

 postulated and produced his passport ; he was met with 

 the smiling rejoinder that it was easy to understand why 

 His Excellency should wish at such a time to inspect the 

 frontier incognito, and he finally was forced to leave the 

 landlord unconvinced and unpaid. 



Shortly after the train left Mannheim, he found that 

 the Prussians were occupying the main line between 



