[London,] 11 January [1858] 

Dear Frederick, 

‘Campaign’, etc.”” received. In the next day or so I shall go to 
the Museum* to look up the matters in question.” 

Affairs in India—with Windham for Hero—are again taking an 
interesting turn. If we have fuller particulars this week, by 
Wednesday or thereabouts, I shall have to send off something on 
the subject to the Tribune.? 

In elaborating the principtes of economics””’ I have been so 
damnably held up by errors in calculation that in pesparr I have 
applied myself to a rapid revision of algebra’ I have never felt at 
home with arithmetic. But by making a detour via algebra, I shall 
quickly get back into the way of things. 

Your health bulletins are too cursory. I’d like you to go into 
more detail, For instance, have all your sores healed up? 

More in my. next. 

Your 
K. M. 

a the British Museum Library - > See this volume, p. 241. 

The reading-room of the British Museum, London, where Marx worked 

I hunted through Clausewitz,? more or less, when doing Blücher. 
The fellow possesses a common sense bordering on the ingenious.