IN the first two of her series of talks Professor
Cullis dealt with the important question of what to eat and drink. She now proceeds to the equally fundamental matter of breathing. How many of us breathe healthily ? Of course, in many of our English industrial towns we cannot hope to breathe the right things-the air is a compound of soot and chemicals from factory chimneys ; but at least we can breathe the right way, and that is what Professor Cullis will tell us this afternoon how to do.