Meteorological observations made at one single station are of little value by themselves. Their full value lies in the possibility of their being correlated with observations made contemporaneously at other stations in neighbouring parts of the world. Particularly is this so where the station is a moving one, as in the case of the _Quest_. Consequently no attempt can be made here to draw any general conclusions from the observations which were made on the voyage. The complete meteorological logs have been handed over to the Marine Meteorological Section of the Air Ministry, as, with all the material that they can collect from ships all over the world, that body is in a position to make the best use of our results. [Illustration: THE ISLAND TREE (_PHYLICA NITIDA_) _Photo: Wilkins_] [Illustration: SEA-ELEPHANTS AMONG THE ROCKS] [Illustration: COMMANDER WORSLEY TAKING OBSERVATIONS OF THE SUN BY SEXTANT _Photo: Wilkins_] [Illustration: HUSSEY (TAKING SEA TEMPERATURES), COMMANDER WILD AND McILROY _Photo: Dr. Macklin_] At the outset of the expedition the Air Ministry very kindly gave us every assistance, and lent us a great deal of apparatus and many instruments on the understanding that they would be allowed to use the information that we gathered. This arrangement has been carried out, and we hope that among the many scientific results of the expedition we have been able to add one link to the chain of observations which is being made daily all round the world, and so we may have justified our existence. The instruments used consisted of the following: (_a_) Two standard ships’ screens, in each of which were a wet and dry bulb thermometer. These were placed one on each side of the bridge, well exposed and as far as possible away from any draughts and convection currents from galley and engine-room. The readings were taken from the screen on the weather side. (_b_) A marine-pattern mercury barometer, hung in the gyroscope-compass room, which was also used to check the ship’s aneroid which was placed in the wheel-house. (_c_) A barograph, which was, however, of little use owing to the bad weather that we experienced and the continual rolling and pitching of the ship. (_d_) Several sea thermometers and hydrometers for surface work. (_e_) Various equipment, such as kites, balloons and meteorographs, which were taken for experimental purposes. Complete observations were taken every four hours of air and sea temperatures, humidity, pressure, wind, direction and form of clouds, etc., in the usual ship’s meteorological log. Except when the ship was in port, where permanent stations existed, these observations were carried out continuously during the whole of the voyage, making roughly about two thousand odd sets of observations in all. Although no general conclusion can yet be drawn from these observations, a general summary of the weather conditions experienced by the _Quest_ may be of interest.