10 



C. Barus — Viscosity of Steel and 



Table 6. 

 y=100°; 7 V =20°; a=26<™ ; &=30 cm ; Z=60 cm ; *=34 cm . Rods: No. 11, 

 soft: No. 12, soft; 2/>=0-0S2 cm . 



Date. 



h 



<bx 10 3 





Date. 



h 



c>xl0 3 





4/3, 10 h 08 m 



o-oo 



o-oo 



* 



4/3, 12 11 59 m 



2-85 



1-62 



St'm 

 off. 





0-08 





1 



1 40 



3-53 



1-58 



10 13 



1 



57 1 



4/3, l h 57 m 



o-oo 



o-oo 



f 



18 



0-16 



2 



17 













24 



0-2S 



2 



33 



Zfl 



2 04 



041 



--2-53 



1* 



33 



0-41 



2 



4J 



CD 



09 



0-20 



— 2-89 



47 



0-65 



2 



52 



\l 



19 



0-36 



-3-16 



n 



57 



0-83 



2 



60 



O 



28 



0-51 



-3-19 



11 12 



1-06 



2 



69 



• 3 



40 



0'71 



— 3-26 



o 

 3 



20 



1-20 



2 



74 





3 06 



1-15 



-3-36 





40 



1-53 



2-86 



J 



















3 10 



1-21 



-3-20 



1 m 



11 45 



1-62 



2 64 



1 w 



16 



1-31 



— 2-78 



cf 



11 55 



1-78 



2-01 



! 1 



24 



1-45 



— 2-52 



J* 



12 05 



1-95 



1-89 



\i 



33 



1-60 



-2-37 



15 



2-11 



1-78 



44 



1-78 



— 2-27 



29 



2-35 



1-69 



J * 









* t (cold rod) + 6°, imparted before heating. 



f r (cold rod)— 6°, imparted before heating, immediately after *. 



Table 7. 



T= 



190°; 1 



'=20° 



a=26 cm ; 5=30 cm : Z=60 cm ; 



ft=34 cr 



\ Rods 



: No. 5, 



annealed, 190°; No. 6 



, annealed, 190° ; 2p=0-082 cm . 





Date. 



h 



</>xl0 3 





Date. 



h 



o xlO 3 





7/3, 



9 h 55 m 



o-oo 



o-oo 



* 



9 50 



0-25 



14-70 



1 













53 







30 



16-04 







10 00 



0-08 



— 7-45 



Vapor 

 on. 



56 







35 



17-13 



<j 





04 



0-15 



— 22 - 20 



10 00 







42 



18-39 



s» 





10 



0-25 



-23-58 



08 







55 



2028 



J-S 





19 



0-40 



— 23-72 



15 



27 





 



(57 



ST 



21-71 

 23-76 



o 



7/3, 



12 h 27 m 



o-oo 



o-oo 



t 















40 



1 



OS 



25-66 







12 33 



040 



21-91 



1 ^ 



47 



1 



20 



26-83 



J 





36 



0-15 



34-46 

















40 



0-22 



40-25 



11 00 



1 



42 



25-66 



) < 





42 



0-25 



42-54 



I o < 



20 



1 



75 



25-09 



f & o 





12 55 



0-47 



40-52 



55 



2 



33 



24-94 



) ° 





8/3, 12 h 00 m 







00 



o-oo 



II 





1 40 



1-22 



39-H4 



\ ^V 



08 







13 



-10-84 





7/3, 



2 h 35 m 



o-oo 



o-oo 



% 



1 













10 



U 



17 



— 12-51 







2 45 



047 



-17-13 



}< 



12 



0' 



20 



— 13-68 







47 



0-20 



-18-38 



15 



u 



2b 



— 14-98 







53 



0-30 



-20-22 



it 



IS 







30 



— 16-06 



< 





3 10 



0-58 



-23-10 



21 







35 



— 16-92 



SB 





19 



0-73 



— 23-56 



1 § 



25 







42 



— 17-92 



y% 





43 



1-13 



-26-41 



J ' 



30 







50 



— 19-02 



o 











35 







58 



— 20-01 



r 1 





3 53 



1-30 



— 25-49 



1 < 



y Bsi3 



40 







67 



— 20-77 







4 07 



1-53 



— 25-02 



45 







7b 



— 21-44 







45 



2-17 



-24-86 



50 







83 



— 22-03 





8/3, 



9 00 



18-42 



— 24 86 



J Q 



1 00 

 1 12 



1 

 1 



00 

 20 



— 23-04 



— 22 20 



J 



8/3, 



9 h 35 m 



000 



o-oo 



§ 



) < 













30 



1 



51) 



— 21-73 



y &* 





9 43 



0-13 



6-20 



) < 



45 



1 



7 5 



— 21-67 



p s 





45 



0-17 



9-81 



t §h i 













48 



0-22 



13-27 



r « 













* r (cold rod 



)— 6°, imparted before heating. 







f t (cold rod 



) + 6 D , imparted before heating, immediate 



ly after *. 





X r (cold rod 



) — 3°, imparted before heating, immediate 



ly after f . 





§ t (cold rod 



) + 3 c , imparted before heating, immediate 



ly after ±. 





hi 



3old rod 



) — 3°, ini] 



carted bef 



ore heating, af 



,er § 









