Mr. Gr. Fuller on a Water-spray Influence-machine. 45 



soldered to theni which press against E and F ; but when 

 the receivers are nearly full of water, their balance is such 

 that they turn in the opposite direction and so empty them- 

 selves. The four receivers are made to turn towards the axis 

 of the machine and to deliver the water into a metal bath, 

 which for continuous action should be connected with a drain. 



The following are some of the dimensions of the author's 

 model : — 



Zinc receivers 8" diameter at the top. 



Brass tube E and F •§■" diameter. 



Glass rod D f " diameter, with an insulation of 4". 



From the rim of C to the lower surface of A, 9^ // . 



From the rim of C to the underside of stand, V V . 



From centre to centre of insulators D across the centre line 

 of instrument, V V' . 



