METHODS OF OBS^RyiNG THE LONGITUDE AT SEA. 



69 







SECOND EXAMPLE 









Mr. Madge's 



Mr. Ar- 





' 



Total Error 





Ckrnnonietei 



s. 



nold's 



No. 86. 



Mean Daily 

 Rate of 

 Three. 



of Three 

 Chronome- 

 ters. 



Cxreeii. 



Bl 



ue. 



Dail> Rate. 



Daily 



Rate. 



Daily Rate. 



1 



- l'M2 



- 0''.27 



- 0".3^^ 



- 



\56 



- 0".56 



2 



.61 



+ 



.06 



.1 





.22 



.78 



3 



.97 





.40 



+ .1 





.42 



1 .20 



4 



.64 





.40 



.3 





.24 



1 .44 



/; 



.16 





.16 



.1 





.07 



1 .51 



'~6 



.11 





.05 







"05 



1 .56 



7 



.64 





.41 



- .8 





.62 



2 .18 



S 



.47 





.57 



.7 





.58 



2 .76 



9 



.35 





.13 



1 .1 





,53 



3 .29 



10 



.99 





.45 



.7 





,71 



4 .00 



11 



.05 





.30 



.1 





.15 



4 .J5 



12 



.74 





.37 



+ 0.1 





.33 



4. 48 



13 



.36 





,12 



.7 



+ 



.07 



4 .41 



14 



+ .04 



+ 



.08 



.2 





.11 



4 .30 



15 



+ .05 





.38 



.5 





.06 



4 .24 



16 



- .26 





.34 



- .6 



— 



"13 



4 .64 



17 



.00 





.45 



] .2 





.55 



5 .19 



18 



+ .43 





.18 



.8 





.18 



5 .37 



19 



- .36 





.49 



.6 





.48 



5 .85 



20 



+ ,07 





.19 



.0 





.04 



5 .89 



27 



+ • .39 





.23 



.0 



+ 



.05 



5 .84 



22 



.44 





.17 



+ .2 





.16 



.) .68 



23 



.59 





.04 



4- .6 





.18 



5 .50 



24 



.49 





.46 



- .2 



— 



,06 



5 .56 



25 



.65 





.46 



.3 





.04 



5 .60 



25 



.20 





.74 



+ .1 





.14 



5 .74 



27 



.86 



+ 



.08 



.3 



+ 



.41 



5 .33 



28 



.53 





.41 



I .5 





.54 



4 .79 



29 



.74 





.85 



1 .3 





,40 



4 .39 



30 



+ .67 





.07 



.2 





,27 



4 .12 



31 



1 .50 



+ 



.85 



.6 





.98 



3 .14 



1 



.80 



_ 



.03 



1 .8 





.86 



2 .28 



2 



.87 





.23 



1 .0 





.55 



J .73 



3 



.63 



+ 



.02 



2 .6 



1 



.08 



.65 



4 



1 .28 





.16 



.4 





.61 



.04 



5 



.43 



- 



.51 



2 .2 





.71 



4- .67 



~6 



.84 





.42 



.8 





"ai 



1 .08 



7 



.61 





.18 



.6 





.34 



1 .42 



8 



.25 





.68 



.2 



— 



.08 



1 .34 



9 



.38 





.54 



- .6 





.25 



1 .09 



10 



.41 





.39 



.2 





.06 



1 .03 



11 



- .83 



- 



.27 



+ 2 .2 



+ 



.92 



+ 1 .95 



Table of three 

 other chronome- 

 ters. 



from 



