338 On certain Laws relating to the Cohesion of Fluids. 



The following experiments, made with water, will sufficiently 

 illustrate the laws here indicated : — 



Experimental Table I. 

 Diameter of tube = "28 inch. Length of the column of liquid. 



Here the limiting angle of resistance /3 = 0, the angle of mini- 

 mum time of descent ^, =50^, and the general formula is 



"^"^ sin (2^ -10) + sin 10 + '' • • • (^) 



Experimental Table II. 



Diameter of tube = 22 inch. Length of the column of liquid, 

 L = 20 inches. 



Here the limiting angle of resistance /8 = 0, the angle of mini- 

 mum time of descent ^, = 50'', and the general formula is 



T = 



12 



sin(26'-10) + sinlO 



+ 6. 



(4) 



