The more powerful of these sets was never very satisfactory, and we ultimately abandoned its use. The smaller proved entirely satisfactory for transmitting at distances up to 250 miles. The receiving apparatus was chiefly of value in obtaining time signals, which are sent out nightly from nearly all the large wireless stations, and which we received at distances up to 3,000 miles. By this means we were frequently able, whilst in the South, to check our chronometers; but atmospheric conditions in those regions were very bad, and by producing loud adventitious noises in the ear-pieces interfered so much with the clarity of sounds that the obtaining of accurate signals was generally impossible. A Sperry gyroscopic compass was installed, the gyroscopic apparatus being placed in the deck-house, with repeaters in the enclosed bridge and on the upper bridge. The dials were luminous, so that they could be read at night. This apparatus has the advantage that it is independent of immediate outside influences. It is usually supposed that at 65° north or south it ceases to be effective, but we found that the directive force was still sufficient at 69° south. It is interesting to note that this compass was designed by a German scientist to enable a submarine to reach the North Pole. It has been of the greatest use to ships in a general way, but for the one specific purpose for which it was designed it proved to be useless owing to the loss of directive power at the Poles. We found that bumping the ship through ice caused derangement, and as the compass took several hours to settle down again to normal, it proved ineffective whilst we were navigating through the pack. Fitted into the enclosed bridge and looking forward were two Kent clear-view screens. They were electrically driven. They proved, when running, to be absolutely effective against rain, snow or spray. The ship was fitted throughout with electric lighting, including the navigating lights. Whilst in the South, however, the necessity for economy of fuel forbade the use of electricity and we had recourse to oil lamps. As we were then completely out of the track of shipping, navigating lights were not used.