1 



COHESION AND CRYSTALLIZATION 79 



of tl drop becoming more and move black. Each line of force 

 imtil )mes segmented into granules, 

 so a. ,]j gradually increase in size, and 

 nowe 'oach nearer to one another and 

 acetate centre of the drop, until it 



^ ics the mulberry appearance shown 

 the P'i photograph (Fig. 1!)). 

 oxygen we sow a number of drops of 

 revolvii j n ]j nl regular order on the 

 thus obt f a sa lt solution, we obtain 

 of the pu^ u tif u l patterns formed by the 

 curve is nttp U lsion of the drops. Figs. 

 circulation 00 represent the successive 

 and exhibits s ;ven drops of Indian ink 



The rlrythi a l a y er of salt solution, 

 current of actio* ur bed long enough to allow of their evolution, 

 that produced by 

 this current may be - " " 

 Einthoven galvanomet. 

 instance of rhythmic ca 

 phenomena, movement, ch 

 In the chapter on physiogen 

 of this question and consider 

 which is the result of osmotic 



Fig. 19. — Muriform cohesion 

 figure formed by a drop 

 of Indian ink in a solution 

 of salt. 



