And finally, for analytical chemistry, we had Gussy Ampt, Gustav Adolphus Ampt, who is, I think, generally recognised as the greatest analytical chemist in Australia at the time and was, of course, very important in forensic medicine with doing chemical analyses for police and crime detection. His famous remark, I recall, was, 'Near enough is not good enough'. In those days, number one exercise was to calibrate a box of weights. You actually had to take your box of weights you couldn't assume that it was accurate, you had to calibrate it. You weighed by swings, which was probably, I think before your...

[Q] I was still doing it when I worked with him, Norman, so yes.

Okay, weighing by swings so that each weight took between quarter of an hour and 20 minutes,but you got it to a tenth of a milligram. And then, of course, you had to calibrate your burettes and your pipettes; you mustn't blow down a pipette, you must put your thumb on top and squeeze it, heat it up and that blows the last drip out. You had to measure the temperature of the water, look up tables of density; it took us weeks before we even started chemistry, doing all this wretched calibration. I don't think the students nowadays would tolerate this. They put it on a balance, in fact it's simple, a single-pan balance so it's not a bilanx which is two pan, it's a single pan balance these days, but... then the answer is printed out and if it appears on the printout it must be right, so that's it, that's just a difference.