they were eating full rations and more? Weaken so much that in the end they starved to death?
I have always had a doubt whether the weather conditions were sufficient to cause the tragedy. These men on full rations were supposed to be eating food of sufficient value to enable them to do the work they were doing, under the conditions which they actually met until the end of February, without loss of strength. They had more than their full rations, but the conditions in March were much worse than they imagined to be possible: when three survivors out of the five pitched their Last Camp they were in a terrible state. After the war I found that Atkinson had come to wonder much as I, but he had gone farther, for he had the values of our rations worked out by a chemical expert according to the latest knowledge and standards. I may add that, being in command after Scott's death, he increased the ration for the next year's sledging, so I suppose he had already come to the conclusion that the previous ration was not sufficient. The following are some of the data for which I am indebted to him: the whole subject will be investigated by him and the results published in a more detailed form.
According to the most modern standards the food requirements for laborious work at a temperature of zero Fahr. (which is a fair Barrier average temperature to take) are 7714 calories to produce 10,069 foot-tons of work. The actual Barrier ration which we used would generate 4003 calories, equivalent to 5331 foot-tons of work. Similar requirements for laborious work at −10° Fahr. (which is a high average plateau temperature) are 8500 calories to produce 11,094 foot-tons of work. The actual Summit ration would generate 4889 calories, equivalent to 6608 foot-tons of work. These requirements are calculated for total absorption of all food-stuffs: but in practice, by visual proof, this does not take place: this is especially noticeable in the case of fats, a quantity of which were digested neither by men, ponies, nor dogs.
Several things go to prove that our ration was not enough. In the first case we were probably not as fit as we seemed after long sledge journeys. There is no doubt that
