1879.] 



the Capillary Phenomena of Jets. 



77 



Two wave-lengths 



It is possible, however, to observe in cases where the amplitude is 

 so small, that the discrepancies are moderate even at higher pressures 

 than those recorded in Table III. The measurements in Table IV are 

 of a jet from an elliptical aperture of small eccentricity. The ratio of 

 axes is about 5 : 6. The wooden box was used, 

 were measured. 



Table 1Y.— December 18. 



Pressure. 



1287 



1195 



1117 



1023 



947 



852 



770 



695 



620 



532 



451 



371 



290* 



248 



192 



158 



133 



Ill 



94 



85 



Wave -length. 



\/ (Pressure) 



79f 



.. . 831 



82 



80 



79i .... 



77i 



73 



74i 



70i .... 



71* 



66| 



68 



64J .... 



641 



611 .... 



61 



58 



58 



54| 



531 



481 



49i 



45i .... 



44| 



39^* .... 



391* 



361 



36* 



311 



32 



28f 



29i 



261 



26| 



241 



241 



21 j 



221 



21 



211 



The following experiments relate to an orifice in the form of an 

 equilateral triangle, with slightly rounded corners. The side measures 

 about 3 millims. In this case the peculiarities of the contour are re- 

 peated three times in passing round the circumference. Two wave- 



lengths were measured. 



Pressure. 

 215 

 166 

 127 

 92* 

 66 

 43 

 27 



Table V.— November 16. 

 Wave-length. 



36 ..... 



311 

 27 

 23* 

 19 



Hi 



\/ (Pressure). 



35 



31 



27 



23* 



19i 



15J 



121 



f This is, doubtless, an error. At these high pressures the observation is difficult. 



