LIQUIDS AND ALLIED EXPERIMENTS. 



19 



Table 3. — Diffusion of air through water into air. 



Mgp H / 1 1 \ 

 [= ( ); il/=i2.oi grams; i? = 2.8yX io G ; p,„= 13.6; A = Mgp m /R = 0.05 583; 



1 = 28.0 cm.; h"= 15.0cm.; 2h'"= 13.0cm.: i/p ff = 0.3486;* water head o. 1 1 cm. 

 Diameters: Vessel=4.3 cm.; float = 2.j cm. Areas: A'= 14.5 cm. 2 ; .4 = 7.05 cm. 2 



Date. Hour. 



Barometer. 



II 



t 



Observed 

 wjXio 6 



Computed 

 m X 1 o 6 



A mX io 6 



h. m. 

















Jan. 31.. 





7589 



69.51 



.7.8 



8548 



8498 



+ 50 



Feb. 1 . 







76 .73 



69.50 



18.4 ] 



8523 



8463 



+ 60 



2. 







75.10 



67.71 



19 4 j 



8259 



8428 



— 169 



3- 





' | 



76.80 



65-54 



16.4 



8262 



8393 



-131 



4- 







74 76 



66.69 



22.2 



8255 



8358 



-103 



6. 



• • 





77-04 



64-57 



15.2 



8172 



8288 



-116 



7- 







76.16 



64.22 



16.6 



8091 



8253 



— 162 



8. 







76.44 



64-33 



18.7 



8051 



8218 



— 167 



9 







7584 



65-34 



22.4 



8075 



8183 



-108 



10. 



. 





75-49 



66.2! 



23 1 



8174 



8148 



+ 26 



1 1 



. 





7654 



65 .22 



22.8 ; 



8058 



8114 



- 56 



'7 



4 00 



76.15 



6l. l6 



17.0 



7697 



7904 



— 207 



18 



• 4 '5 



75-37 



64.72 



26.2 



7916 



7869 



+ 47 



19 



• 4 35 



76.06 



64.59 



24.0 ; 



7952 



7834 



+ 118 



20 



• 4 45 



75.01 



63-57 



21.3 



7892 



7799 



+ 93 



21 



• 4 45 



75-88 



62.98 



215 



7813 



7764 



+ 49 



22 



• 4 35 



75-30 



62.67 



22.2 



7758 



7729 



+ 29 



23 



• 4 40 



75 5' 



62.54 



22.0 



7747 



7694 



+ 53 



24 



4 '5 



7487 



62.9I 



24.2 



774' 



7659 



+ 82 



25 



• 3 '5 



75-52 



63.46 



26.8 



7747 



7624 



+ 123 



26 



4 10 



75-72 



63.58 



25.6 



7790 



7590 



+200 



27 





4 00 



75 9' 



62.98 



23.8 



7758 



7555 



+203 



28 



4 05 



76.14 



6l.I5 



20.6 



7607 



7520 



+ 87 



Mar. 1 



3 50 



75.00 



61.28 



23.6 



7553 



7485 



+ 68 



2 



• 3 40 



74-7' 



62.26 



27.0 



7598 



7450 



+ 148 



3 



• 3 35 



75 M 



58.89 



.5.6 



7444 



74J5 



+ 29 



4 





3 40 



75-99 



59 35 



21 . 1 



7372 



738o 



- 8 



5 





5 00 



77.04 



58.95 



21.0 



7325 



7345 



— 20 



6 





4 00 



76 -37 



59-13 



23.2 



7297 



7310 



- '3 



7 





3 3o 



77-25 



58.76 



22.2 



7273 



7275 



— 2 



8 





3 45 



76.60 



59.12 



24.8 



7261 



7240 



+ 2T 



9 





3 45 



76.02 



58.91 



22.0 



7297 



7205 



+ 92 



10 





3 45 



74 59 



57 78 



.8.3 



7240 



7170 



+ 70 



1 1 





3 45 



76.38 



56.93 



.8.5 



7130 



7'35 



— 5 



12 





4 00 



75-87 



56.01 



16.6 



7056 



7100 



- 44 



13 





4 00 



7673 



56. 10 



18.9 



7016 



7066 



- 50 



"4 





3 45 



76.59 



55-09 



17.0 



6932 



7031 



- 99 



15 





3 45 



74-44 



55-55 



20.0 



6923 



6996 



- 73 



16 





4 00 



75-44 



53 94 



13.1 



6874 



6961 



- 87 



'7 





3 30 



76.64 



53-5' 



16.6 



6742 



6926 



-184 



18 





3 45 



75.80 



54.92 



22.4 



6794 



6891 



- 97 



'9 





4 00 



76.04 



5587 



22.9 



6900 



6856 



+ 44 



20 





3 3° 



74-5' 



56.30 



23.2 



6964 



6821 



+ 143 



21 





3 45 



75-57 



55 3' 



20.2 



6889 



6786 



+ 103 



22 





3 30 



74.61 



54.80 



20.7 



6815 



6751 



+ 64 



23 





3 30 



75-46 



54 34 



18.8 



6799 



6716 



+ 83 



24 





3 30 



76.54 



53.20 



17-5 



6684 



6681 



+ 3 



25 





3 45 



77.02 



52-34 



17.2 



6582 



6646 



- 64 



26 





4 30 



76-54 



52.80 



21.4 



6552 



661 1 



- 59 



27 





3 45 



75-07 



53 25 



21.5 



6606 



6577 



+ 29 



28 





3 45 



74-59 



53-97 



22.3 



6678 



6542 



+ 136 



29 





4 00 



74 83 



53 64 



22.2 



6640 



6507 



+ 133 



30 





4 00 



73-77 



53-27 



21 .2 



6614 



6472 



+ 142 



3' 





4 00 



74 58 



52-55 



19.6 



6573 



6437 



+ 136 



"Cf. §24. 



