502 On the Forms assumed by Drops of Liquids. [Jan. 18 



Fig. 3. I'ig. 4, 



Set 2 exhibits variations. 

 Fig. 1 is a variation of fig. 2, Set 1, tbe rays being rather fewer and lobed at the ends. 



This was only seen once, and then no drops spHt off to be left on the plate. 

 Fig. 2. This is inserted here as a variation of fig. 4, Set 1, viewed from above, though 



it was really seen with a greater height of fall (205 millims.). There is a 



slight convexity at the edge, and the rays are only visible there. 

 Fig. 3 is a variation of fig. 7, Set 1, where the figure had, as near as could be 



estimated, 8 lobes. 



Fig. 4 is a frequently seen variation of fig. 8, Set 1, the rajs being visible to the 

 centre, joined by a thinner film of liquid. 



Set 3. 



Fig. 1. Fig. 2. 



Set 3 shows two early stages seen with a drop of milk 4'22 millims. in diameter 

 falling from a height of 30 millims. on to smoked glass. 



The early stages with milk (or, what was rather less convenient, 

 water coloured white with finely powdered flint) did not differ markedly 

 from those of mercury. 



By increasing the height of fall to 130 millims. the number of rays as 

 indicated by the drops left on the plate was increased to 27, and with a 

 height of fall of 270 millims. the number became 48, or sometimes some- 

 where about 60, the drops being smaller. 



By increasing the size of the drop the number of rays was increased 

 also. Thus with a drop of four times the cubical contents of those 

 mentioned, and falling from a height of 78 millims., the number of drops 

 left on the plate was often 36, and the drops were larger, and, indeed, 

 the whole phenomenon was on a larger scale. 



