278 JAMES CLERK MAXWELL. [CHAP. X. 



of 1860 the ex-professor of Aberdeen was appointed 

 to the vacant Professorship of Natural Philosophy in 

 King's College, London. 



To LEWIS CAMPBELL, Esq. 



Glenlair, 28th August 1857. 



... I have been battering away at Saturn, returning 

 to the charge every now and then. I have effected several 

 breaches in the solid ring, and now I am splash into the 

 fluid one, amid a clash of symbols truly astounding. When 

 I reappear it will be in the dusky ring, which is something 

 like the state of the air supposing the siege of Sebastopol 

 conducted from a forest of guns 100 miles one way, and 

 30,000 miles the other, and the shot never to stop, but go 

 spinning away round a circle, radius 170,000 miles. . . . 



To THE SAME. 



Ardhallow, Dunoon, 4th Sept. 1857. 



The road along Loch Eck is the most glorious for shape 

 and colour of hills and rocks that I have seen anywhere, 

 specially on a fine calm day, with clouds as well as sun, and 

 with large patches of withered bracken mixed with green on 

 the less steep parts of the hills. Then the crushing and 

 doubling up of the strata, and the slicing and cracking of 

 the already doubled up strata, quite without respect to 

 previous torment, gives a notion of active force, as well as 

 passive, even to ungeological minds. We inspected Duncan 

 Marshall, the Hermit of these parts, and wound up the day 

 with a pull in the boat till dark. . . . 



Mrs. Wed[derburn] professes herself ready to " follow 

 follow South " when asked, so when Johnny and I have done 

 our Moidart and Loch Aylort, we shall hoist sail or get up 

 steam or something, and then very likely he may reappear 

 to his parent and aunt, and I shall continue my road with 

 my aunt to wait upon the faithful Tobs, and realise Saturn's 

 Kings, and probably feed a few natives of the valley with 



