the rest of our stay in Heidelberg was a continual joy to her and, until 

 her death, it remained one of her sunniest memories. 



On the wall of the living room in our apartment in the Plockstrasse 

 there hung a tinted lithograph of the Porta Nigra in Trier (or Treves) 

 a wonderful Roman work of the fourth century. I don't believe that I 

 had ever so much as heard of Trier before that, but the picture awak- 

 ened an ardent desire to go there and this desire was further strength- 

 ened by reading Freeman's famous essay on Trier. The visit, so much 

 desired, could not be made until 1888. 



The unremitting labours of six months began to tell on me, and 

 matters were not improved by an unpleasant and unsuitable diet and 

 insufficient exercise. I became very nervous and could hardly sit still 

 and, to combat this tendency, I took to smoking and found it an 

 excellent sedative. There must have been some indication in my ap- 

 pearance that the bow had been drawn too tight, for Gegenbaur told 

 me that I was overworking and must have a rest. "Take an excursion 

 somewhere and recruit your strength." Gadow and I had often talked of 

 taking a tramp through the Black Forest and concluded that the short 

 Easter vacation could best be utiHzed in that way. 



Hans Gadow, Ph. D., was one of the three workers in Gegenbaur's 

 laboratory and we became lifelong friends. He was a Pomeranian and, 

 as his name indicated, of Wendish descent. He used to declare that he 

 hated Germany and meant to emigrate, to England if possible, as soon 

 as he could, and was already in correspondence with Dr. Giinther, of 

 the British Museum, with a view to obtaining a position there. He went 

 to England and, after a period in London, he established himself in 

 Cambridge, where he was made a fellow of King's College and a reader 

 in zoology and there he remained for the rest of his Hfe, marrying Miss 

 Paget and building a house at Shelford. Several times he and his wife 

 were our guests in Princeton and several times I stayed with the Gadows 

 in Shelford and thus our friendship was maintained as long as he 

 lived and his unexpected death came as a great shock. 



Gadow never quite forgave me for catching him in a trap that I set 

 for many Germans and always successfully, though the victim was 

 usually quite unconscious of having been caught. When I made a new 

 acquaintance and could not tell his place of residence from his accent, 

 I would ask him casually where the best German was spoken. In- 

 variably the reply was: (i) in Hanover and (2) the place where I live. 

 Hanoverians had no second choice. Thirty years after we had left 



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