247 



When tho spark- gap was doubled (from O, o 8 cm to 

 0,16 cm) the number of sparks in the minute was 82 with 

 the same quantity of water as before. 



From this seems that the resistance had much diini- 

 nished while tho quantity of drawn up liquid was almost 

 the same as in the case of the water. 



These experiments were taken up a fresh with a nor- 

 mal-solution of 2 {KH)0 (1 g pro htre), The point s was 

 first positive and a little dröp of down-running hquid sho- 

 wed itself in the lacing in, buf when the point was united 

 with the neg. pole the foUowing results were received with 

 the tube L^ (0,4 5 mm in diam. 29,4 cm in length). 

 See Table of Observations Series XII. 



If vve compare Series XI (distil water) with Series XII 

 we shall see that the drawn up quantity of liquid is much 

 less than in the case of dist. water, while the intensity of 

 the current remains about the same, if the greatness of 

 tho spark-gap is taken in to consideration. Hence we can 

 conclude that salt-solutions in general follow the same laws 

 as thoso for water. The drawn quantity will be different 

 for the different salts. 



§ 6. Hereafter the experiment with dist. water were 

 continued with the object of investigating the influence 

 which the diameter of the tube has on the up drawn wa- 

 ter quantity. 



See Table of Observations Series XIII. 



Of these series it results clearly that the drawn quan- 

 tity of water depends on the diameter of the tube, though 

 the ■ magnitude of this dependence is not produced with 

 desirable accuracy. 



In ordre to investigate the same influence, the foUo- 

 wing observations were made in 19j|01. They are presen- 

 ted more completly than usually. Before the experiments 

 were made the tubes were washed with sulph acid, 

 conc. to which a little nitric acid was added; and finally 

 thev were well washed with dist. water. 



