454 Prof. J. Perry on Liquid Friction. 



Table IX.— March 28th, 1892. (1 = 6*525 centim.) 



0°C. 



n. 



D. 



y> 



81 



38-5 



38 



518 



80-5 



56 



63 



8-557 



80 



69 



88 



11-80 



79-5 



84 



112 



14-70 



— 



104 



134 



18-29 



83 



92 



116 



16-157 



! 



y means D/(/ + X) corrected to 81° C. 

 The law seems to be y a n 1 ' 3 nearly. 



Table X.— March 23rd, 1892. (Z= 7*025 centim.) 



0°C. 



a. 



D. 



* 



82 



17-5 



16 



2-06 



82 



14 



11 



1-23 



82 



26 



26 



3-35 



81 



32 



33 



4-22 



80 



11-5 



8-5 



1-08 



82 



10 



6-5 



0-84 



If it is assumed that w=10 is not much above the critical 

 speed, fM may be calculated as 0*0646. According to (9) 

 ^=0-062 for 81° C. 



y ocfti-80 mav L, e taken as the law. 



Table XI.— March 24th, 1892. (2=6-7 centim.) 



9° C. 

 65 



, 



D. 



y- 



li. 



9 



8 



1-07 



■091 1 : 



66 



10-8 



9 



1-21 



•086 [ 



65-5 



17 



16 



2-14 



•097 J : 



64-5 



21 



21 



2-79 





65 



23-5 



26 



3-46 





65 



29 



32 



4-26 





65 



114 



210 



28-00 . 





66 



102 



162 



21-82 





64-5 



88 



156 



20-10 





65 



66 



112 



14-93 





66 



52 



74 



9-96 





66 



44-5 



59 



7-94 





66 



38 



46 



6-19 



1 







y is D/(? + X) corrected to 65° C. \i has no meaning except 

 for the first three speeds, and the mean of these three is 

 0-091. According to (9) the value of (jl for 65° C. is 0*085 



; 



