CAP1LLAR Y A TTRA CTION. 5 5 



obscure. The curious and interesting statement 

 at the top of the second column of p. 63, regarding 

 a drop of carbon disulphide in contact with a 

 drop of water in a capillary tube would constitute 

 a perpetual motion if it were true for a tube 

 not first wetted with water through part of its 

 bore " ... if a drop of water and a drop of 

 bisulphide of carbon be placed in contact in a 

 horizontal capillary tube, the bisulphide of carbon 

 will chase the water along the tube." 



Additional Note of June 5, 1886. I have care- 

 fully tried the experiment referred to in the 

 preceding sentence, and have not found the 

 alleged motion. 



