638 BUNSEN MEMORIAL LECTURE. 



usually dear and masterly manner by our president (this journal, 1S77, 

 i (31), 627). I may, however, here remark that so general, indeed so 

 universal, has the use of this become that its name and value nuist 

 be known to and appreciated b}' millions of the human race. Yet 

 how few of these have any further ideas connected with the name of 

 its author. 



Another discovery which early brought him prominently before the 

 public was that of the Bunsen, or as he preferred to call it, the carbon- 

 zinc battery, a description of which has already been given. The man- 

 ufacture of either the battery or the burner might, had the inventor 

 wished, have been so guarded as to ])ring in a large fortune. Hut 

 Bunsen had no monetary ambition, although he fully appreciated the 

 importance of applied science: and this is a tine trait in his character. 

 He not only disliked anything savoring of money-making out of pure 

 sciiMict'. but he could not understand how a man professing to follow 

 science could allow his attention to l)e thus diverted from pure research. 

 ""There are two distiiu-t classes of men," he used to sa\'; "tirst, those 

 who work at enlarging the boundaries of knowledge, and, secondly, 

 those who ai)i)ly that knowledge to useful ends."" Bunsen chose the 

 tirsl -perhaps one may say the higher — part, and the notion of making 

 money out of his discoveries, or of patenting any of them, never 

 entered into his head. As illustrating this habit of mind, I remem>)er 

 that once we were talking about a former })upil of his, of whose scien- 

 tific abilitj' he entertained a high opinion. "Do you know,'' lu 

 remarked to me, "'I can not make that man out. He has certainly 

 nuich scientitic talent, and yet he thinks of nothing but money-making, 

 and I am told that he has already amassed a large fortune. Is it not a 

 singular case r' To which I replied that I did not lind it so very 

 remarkable. 



In the new laboratory research work was carried on with even 

 greater activity than it had })een in the old one. ^ly own work on 

 photochemical measurt^ments was first carried out in a darkened cham- 

 ber under the slates, where the summer temperature was usual h' above 

 blood heat, and afterwards in Bunsen's private room downstairs. Men 

 whose names have long ago l)een household words with us came to 

 work under the master. Baeyer carried out his early work under 

 Bunsen's care, though after a time he left to work with Kekule, who 

 had just set up a private laboratory in the neighborhood. Lothar 

 Meyer, Carius, and Landolt were continuing their several researches 

 Dexter worked on the atomic weight of antimony, Holtzmann on the 

 ceriimi metals, while Pebal, Erlenmeyer, Meidinger, Lieben, Barth, 

 Moritz Hermann, and Lotz each published interesting communica- 

 tions; and Bahr, f rom Stockholm; Frapolli, from Milan; Pavesi, from 

 Padua, and Lourenfo, from Goa. were also occupied in research. 

 Most of this work Bunsen had initiated; all he assisted by cooperation 



