Geology 



We tried to communicate with them by calling, but 

 the echoes so confused the sound that this was impos- 

 sible. Two of our men had, however, served in the 

 navy, and luckily one of these happened to be with us, 

 and the other in the canoe, and they were able to 

 communicate by means of Morse Code signals, made by 

 alternately exposing and obscuring with the hand, the 

 flame of a candle. By this means we instructed the 

 other party to return to the main chamber and then to 

 meet us in the Creep, to assist in the arduous task of 

 dragging back the rope ladder and other appliances. 



Before leaving the upper chamber a thorough exam- 

 ination of its walls was made in order to ascertain if there 

 were any exit other than the three already observed. 

 In this search we were unsuccessful, and had, therefore, 

 to give up any hope of penetrating farther by this route. 



On our return journey we made a rough survey of 

 the passages by means of a prismatic compass, using a 

 piece of string 50 feet in length for measuring purposes. 



Having collected our stores on the shore of the lake, 

 so that they could be readily brought out by the canoe 

 on its next journey, we embarked once more and drifted 

 down the stream, completing the survey as we went. 

 We arrived at the mouth of the cave at about two 

 o'clock in the afternoon, after having spent three days 

 and nights underground. We were thoroughly tired 

 out with our exertions, and on reaching camp, after a 

 plunge in the pool and a change of clothes, stretched 

 ourselves on the grass in front of the camp, and basked 

 in the glorious afternoon sunshine. 



The next day was spent in drawing up a plan of the 

 cave with its various passages and chambers (Fig. 27), 



1 68 



