628 
Correspondence. 
[October, 
DISCOVERERS AND TEACHERS. 
In Sir Lyon Playfair’s Presidential Address to the meeting of 
the British Association I find a very questionable assertion. 
The speaker declared that “ In England our discoverers have 
generally been teachers,” and added “ I recollect only three 
notable examples of men who were not — Boyle, Cavendish, and 
Joule.” It seems that he must have forgotten the names of 
Darwin and Wallace, of Lyell, Murchison, Bates, Belt, Sorby, 
Pennant, Waterton, White, Crookes, De la Rue, and, I believe, 
Huggins, Robert Brown, and the two Hookers. These names 
come into my mind without any searching for, but it is my belief 
that if the lives of our chief men of Science were collated, it 
would be found that only a minority of them occupied pro- 
fessorial chairs. 
Veritas. 
