Ill 



part he played in the foundation and execution of the well-known 

 'Jahresbericht iiber die Fortschritte der Chemie und verwandter 

 Theile anderer Wissenschaften.' This great work was, in a sense, 

 the outcome and continuation of Berzelius' 'Yearbook.' On the 

 death of the Swedish chemist in 1848, the leaders of the Giessen 

 school of chemical thought determined to carry on his work of 

 registering the progress of chemistry, but on a somewhat different 

 plan. Berzelius at the time of his death was the greatest chemical 

 critic of the time, and wielded his authority with all the despotism of 

 an Oriental potentate, The 'Jahresbericht' of Liebig and Kopp 

 differed fundamentally both in plan and execution from its Swedish 

 prototype. It was to be a review of the year's progress, not only in 

 chemistry, but also in all those sciences which were associated with 

 chemistry, or were, in any definite sense, ancillary to it ; it was to be 

 done impartially, and with no special reference to any set of dogmas 

 or particular school of chemical thought. Practically the whole of 

 the more active members of the scientific side of the Philosophical 

 Faculty of the University were concerned in its production. To Kopp 

 fell the greater share of the arrangement, and of the general editorial 

 management ; in addition, he undertook the summaries relating to 

 Theoretical, Physical, and Inorganic Chemistry. To Buff and Zam- 

 miner was entrusted Pure Physics ; to Heinrich Will, Organic 

 Chemistry ; to Knapp, Technical Chemistry ; to Ettling, Mineralogy ; 

 and to Dieffenbach, Chemical Geology. The first volume appeared 

 towards the close of 1849, and consisted of a review of the work of 

 1847 and 1848. Liebig continued to be associated with Kopp as 

 editor for some years after his removal to Munich, but in 1857 his 

 place was taken by Will, who acted as co-editor until 1862, when 

 Kopp resigned his share in the responsible direction of the publica- 

 tion just prior to his removal to Heidelberg. No chemist active in 

 the prosecution of research needs to be reminded of the value of the 

 ' Jahresbericht.' It has undoubtedly exercised a most beneficient 

 influence on the development of chemical science in Germany, and it 

 has been of the greatest service to those chemists in this country to 

 whom German is not an unknown tongue. 



In 1851 Kopp joined Liebig and Wohler in the production of the 

 ' Annalen der Chemie und Pharmacie,' and for many years he took 

 the responsible share in its management. He prepared the section 

 on " Theoretical Chemistry " in that well-known text-book, Graham- 

 Otto's ' Lehrbuch der Chemie ' and his ' Introduction to Crystallo- 

 graphy,' written specially for chemists, was long a standard work. 



Kopp's scientific papers relating to his experimental and critical 

 labours appeared mainly in ' Poggendorff's Annalen,' and in the 

 ' Annalen der Chemie und Pharmacie.' Two or three of his early 

 communications were printed in the * Philosophical Magazine,' and 



