The steadiness of the temperature was a subject for debate. The stronger the wind blew, the less variation did the thermometer show. Over a period of several days there might be a range of only four or five degrees. Ordinarily, this might be expected of an insular climate, but in our case it depended upon the fact that the wind remained steady from the interior of the vast frigid continent. The air which flowed over the Hut had all passed through the same temperature-cycle. The atmosphere of the interior, where the plateau stood at an elevation of, say, eight thousand feet, might have a temperature -45 degrees F. As the air flowed northwards over Adelie Land to the sea, it would rise slowly in temperature owing to the increased barometric pressure consequent on the descending gradient of the plateau. At sea-level the temperature of the river of air would be, approximately, -20 degrees F. Such a rise in temperature due to compression is a well-known phenomenon, referred to as the Foehn effect. The compression of the atmosphere during the gusts affected the air temperature so considerably that, coincident with their passage, the mercury column could often be seen rising and falling through several degrees. The uniform conditions experienced during steady high winds were not only expressed by the slight variation in the temperature, but often in a remarkably even barometric curve. Thus on July 11 the wind-velocity for twenty-four hours was, throughout, seventy miles per hour; the temperature remaining within a few degrees of-21 degrees F., and the barometric curve did not show as much range as one-twentieth of an inch. In attending to the many instruments and in gathering the voluminous meteorological data, Madigan had his hands very full. Throughout two years he carried on the work capably and thoroughly. It was difficult to keep the instruments free from the penetrating snow and in good running order. The Robinson anemometer was perhaps the greatest source of worry. Repairs and readjustments were unavoidable, as the instrument was constantly working at high pressure. In order that these might be carried out efficiently, the whole apparatus had to be carried down to the Hut. Here, Bickerton and Correll were continually in consultation with the meteorologist on the latest breakdown. Cups were blown off several times, and one was lost and replaced with difficulty. Most aggravating of all was a habit the clocks developed of stopping during the colder spells. The old-fashioned method of boiling them was found of assistance, but it was discovered that the best treatment was to put them through successive baths of benzene and alcohol.