London, 31 July 1893 

122 Regent’s Park Road, N. W. Dear Mr Petersen, 

I am prevented from answering your letter of the 3“ inst. in detail since I 

will be leaving for the Continent tomorrow. '*’ After my return I will try and 

go into the questions you raise. Meanwhile thank you for sending those very 
interesting statistics. Warmest greetings, 

Your 
F. Engels