oxygen was first, and then nitrogen, reaching a new low temperature cf almost minus 20 degrees centigrade JAMES DEA AR(Dramatization): Only the last of the permanent gases remains to be liquefied: hydrogen. In the vicinity of m degrees centigrade, it will be the greatest achievement of our age, a triumph of science NARRATOR: Dewar was determined to be the first to ascend what he called"Mount Hydrogen." But he was not alone. The competitor Dewar feared most uias a brilliant Dutchman, Heike Kamerlingh Onnes. SIMON SCHAFFER: Kamerlingh Onnes was younger than Dewar and, to a certain extent, Ucoked up to the Scotsman as his senior. Dewar didn't have the same, if you'll pardon the expression warm" feelings towards his rival in the race for cold- NARRATOR: Dewar recognized that Kamerlingh Onnes had a new radical approach to science and was planning an industrial-scale lab