Last Work. Final Honors 627 



hcart-musdc, a metastasis that was a plain sarcoma, not a trace of carcinoma 

 in it. In tlic lunys of the same mouse a good sized clump of carcinoma 

 cells, and in another j->LKe in the same lungs, a metastasis tlut contained 

 only sarcoma cells. . . . Dr. Tibiger does not believe with Roussy [of 

 Paris] any more than I do, that one form of cell under pressure can change 

 into the other. Sarcoma remains sarcoma, and carcinoma remains carcinoma. 



Fibigcr told Smith he now had a tar that would produce cancer 

 in 95 per cent of animals, and Smith's concluding notation was: 

 " He docs not think that tar cancer can possibly be due to any 

 parasite." He tried to consult with Dr. Fibiger once more before 

 leaving Copenhagen but, unable to arrange a time convenient to 

 both, an exchange 'of letters had to take the place of the second 

 interview. Both he and Dr. Fridtjof Bang ''^ of the Rigs Hospi- 

 talet wrote Smith: on March 19 Fibiger expressed his indebtedness 

 " for all you. have shown and told me about your wonderful 

 experiments [and for] the opportunity of seeing the preparations 

 and specimens of Dr. Blumenthal. I," he said, " am not able to 

 judge about the significance of these last experiments, and 

 although I cannot deny that two of the microscopical preparations 

 demonstrated by you were closely resembling malignant and 

 especially sarcomatous tumors, I dare not exclude the possibility 

 of all the disease being an infectious one and not at all tumoral. 

 It seems to me that great series of control experiments are required. 

 ..." These he hoped to do, if and when the duties of his uni- 

 versity professorship and other work permitted. Dr. Bang had 

 been " very glad to see [Smith] in Copenhagen, and to learn more 

 exactly and from first hand your famous investigations of cancer 

 in plants, giving so beautiful results." On the evening of March 

 18, Dr. Bang had called on Smith at his hotel and, after demon- 

 strating his cancer slides, examined the Blumenthal rats and slides 

 and the crown gall photographs. 



Dr. and Mrs. Smith left Copenhagen for Amsterdam on March 

 20. Part of his last day had been spent with Professor August 

 Krogh,^-" zoophysiologist, Nobel prize winner, and Silliman 

 lecturer in 1922 at Yale University on the anatomy and physiology 

 of the capillaries. Reaching Amsterdam the next day, Smith, at 

 his first opportunity, went to locate Dr. Deelman only to find he 

 was now professor of pathology in the medical school at Gronin- 



^** Some newer aspects of cancer research, op. cil., 598. 



""Cecil K. Drinker, August Krogh: 1874-1949, Science 112(2900): 105 f., 1950. 



