the sidereal clock could also be seen. Owing to the low position of the pendulum stand, 

 the coincidences had to be observed by lying at full length on the floor, a slight personal 

 inconvenience being the only difficulty involved. A diagram of the connections in this 

 corner of the hut is given below. 



Fig. 4. Diagram showing arrangement of pendulum apparatus within the Hut. 



The dummy pendulum, as before, rested on a cork disc placed upon the stand of 

 the instrument. In the hope of getting a more accurate value of the temperature of the 

 pendulum rod, two more thermometers were hung beside the dummy pendulum 

 (not touching it), the one upright and the other reversed. These were arranged with 

 their bulbs at equal distances on either side of the mid-point between the centres of 

 gravity and of suspension. All three were read by the same microscope as was used 

 in series B, and which slid vertically on a heavy retort stand. 



The arrangements for tune observations were practically the same as in the pre- 

 ceding year, except that a much heavier and more rigid base for the transit instrument 

 was substituted, in the form of a petrol case full of a cement of gravel and water. The 

 final dissolution of the level borrowed in New Zealand made it necessary to use a much 

 less sensitive level fixed above the old broken striding level and taken from one of the 

 4-inch theodolites. Plate 4 shows the form in which this was arranged. Owing to 

 the lack of sensitiveness, a further source of error in the level correction was in this 

 way introduced. The results of the time observations are put down below in 

 Table;XXXII. 



47 



