that the community should foster the purely intellectual 

 efforts of scientific men as carefully as they do their ele- 

 mentary schools and their practical institutions, generally 

 considered so much more useful and important to the pub- 

 lic. For from what other source shall we derive the 

 higher results that are gradually woven into the practical 

 resources 'of our life, except from the researches of those 

 very men who study science, not for it uses, but for its 

 truth. It is this that gives it its noblest interest : it must 

 be for truth's sake, and not even for the sake of its use- 

 fulness to humanity, that the scientific man studies na- 

 ture. The application of science to the useful arts re- 

 quires other abilities, other qualities, other tools than his ; 

 and therefore I say that the man of science who follows 

 his studies into their practical application is false to his 

 calling. The practical man ever stands ready to take up 

 the work where the scientific man leaves it, and to adapt 

 it to the material wants and uses of daily life." 



In that splendid series of lectures which Prof. Tyn- 

 dall delivered in this country he expressed the same idea. 

 He said "There are joys of the intellect as well as joys of 

 the body. These pleasures of the spirit constituted the 

 reward of our great investigators. Led on by the whis- 

 perings of natural truth, through pain and self-denial, they 

 often pursued their work. With the ruling passion strong 

 in death, some of them, when no longer able to hold a 

 pen, dictated to their friends the results of their labors, 

 and then rested from them forever. 



Gould we have seen these men at work without any 

 knowledge of the consequences of their work, what should 

 we have thought of them ? To many of their cotempora- 

 ries it would have appeared simply ridiculous to see men 

 whose names are now stars in the firmament of science 

 straining their attention to observe an effect of experiment 

 almost too minute for detection . To the uninitiated, they 

 might well appear as big children playing with not very 

 amusing toys. It is so to this hour. Gould you watch the 

 true investigator — your Henry or your Draper, for exam- 

 ple — in his laboratory, unless animated by his spirits, you 



