This is a typical story of progress. It started a hundred years ago and dozens of men carried on the work. Out of this search has come a new method of making dyes, and a great industry. And the final answer is found as a by-product of a search for an optical material - a far cry from a medicine to combat Malaria.

     But all of these men found something and added to the sum total of human knowledge. That is the secret of progress. As long as we try and patiently do our best to solve the problem, although we may not get the answer we are looking for, we always get something - even if it is only the valuable experience.     ●