FURTHER INVENTIONS. 39 



This in our then circumstances was a colossal sum, 

 which put for some time an end to our financial 

 difficulties. 



On his return from England William re-entered 

 his Magdeburg factory, but soon found he had lost 

 his relish for such small undertakings, after becoming 

 acquainted with the large scale of English industrial 

 operations and acquiring a taste for English life. He 

 accordingly proposed to settle in England, and as 

 I approved of the project, we took out a patent there 

 for the jointly elaborated differential-governor, in order 

 to facilitate its introduction into England. 



I had meanwhile made two more discoveries 

 which William was likewise to try to turn to account 

 there. The prosecution of my experiments in electro- 

 lysis had led me to attempt to get also good deposits 

 of nickel from a solution of the double salt of sulphate 

 of nickel and sulphate of ammonia. This nickelizing 

 appeared of especial importance for engraved copper- 

 plate which, provided with a coating of nickel, allowed 

 of a far larger number of impressions, without the 

 fineness of the engraving being blunted by the 

 nickelizing. To derive benefit from this process I had 

 made a compact with a Berlin house, from which 

 I expected considerable profit. Unluckily, however, 

 soon afterwards the galvanic depositing of iron from 

 the corresponding iron solution was discovered, which 

 had the great advantage over the nickel coating, that 



O O O' 



it could be easily renewed, when worn out. in that 

 the iron could be again liberated by dilute sulphuric 



