468 



Mr. J. B. Dale on the 

 Table II. 



(1) 



(2) 



(3) 



(4)' 



(5) 

 1 



(6) 



Ph 

 + 



7 



(7) 



(8) 



Ph 

 1 



Ph 



(10) 



(11) 



(12) 



t. 



a. 



Ea. 



PV 



- 3 



x£ 



o 



<Pi- 

 o 



Cj. 



cq 



02 

 O 



Ca- 



e . 



1 



— 7 



+ 5 











2 



-16 



+24 



+ 1 



- 2-9 



- 2-4 



230 



4 



+ 6-1 



146 



ll 



42 



3 



+31 



-43 



+ 2 



- 07 



+ 3-6 



348 



3 



-12-8 



301 



15 



43 



4 



-27 



+36 



- 3 



+ 3-6 



- 1-2 



108 



4 



+ 140 



72 



15 



42 



5 



+ 5 



- 6 



+ 1 



- 2-9 



- 2-4 



230 



4 



- 6:7 



206 



15 



43 



6 



4-21 



-25 



+ 5 



- 2-9 



+ 7-2 



338 



9 



- 2-4 



345 



10 



43 



7 



-30 



+ 34 



-10 



+ 10-7 



- 6-0 



119 



12 



+ 6-1 



90 



6 



42 



8 



4-13 



-13 



+ 6 



-11-4 



- 4-8 



247 



12 



- 3-1 



202 



8 



43 



9 



4-17 



-18 



+ 7 



- 0-7 



+ 15-6 



358 



16 



- 06 



338 



2 



43 



10 



-31 



+32 



-13 



+ 14-2 



- 7-2 



117 



16 



+ 1-8 



130 



2 



43 



1 



4-15 



-15 



+ 7 



-14-2 



- 7-2 



243 



16 



- 1-2 



201 



3 



43 



2 



+ 16 



-15 



+ 8 



- 0-7 



+ 18-0 



358 



18 



+ 0-6 



158 



2 



43 



3 



-30 



+27 



-16 



+ 17-1 



- 9-6 



119 



20 



- 1-8 



310 



2 



44 



4 



+ 11 



- 5 



+11 



-17-1 



- 6-0 



251 



18 



+ 4-9 



141 



8 



41 







+25 



-32 



+ 4 



+ 5-0 



+ 18-0 



16 



18 



- 8-5 



290 



9 



43 



6 



-43 



+48 



-14 



+ 12-8 



-12-0 



133 



18 



+ 8-5 



70 



9 



44 



7 



+23 



23 



+ 10 



-17-1 



- 4-8 



254 



18 



- 4-3 



209 



9 



43 



8 



+20 



-24 



+ 5 



+ 3-6 



+ 18-0 



11 



19 



- 24 



345 



9 



44 



9 



-47 



+ 49 



-19 



+ 17-1 



- 16-8 



134 



24 



+ 4-9 



58 



6 



43 



20 



4-29 



-27 



+ 15 



-242 



- 4-8 



259 



25 



- 12 



191 



6 



43 



1 



+20 



-27 



+ 2 



+ 9-3 



+ 20-4 



25 



22 



- 5-5 



333 



12 



43 



2 



-56 



+68 



-13 



+ 107 



-13-2 



141 



17 



+ 12-8 



121 



15 



43 



3 



+48 



-61 



+ 9 



-15-6 



- 4-8 



253 



16 



-164 



275 



16 



43 



4 



— 5 



+ 14 



+ 7 



+ 14 



+ 19-2 



4 



19 



+ 14-0 



1 



16 



44 



5 



-34 



+36 



—13 



+ 14-2 



- 7-2 



117 



16 



- 37 



191 



20 



43 



6 



+ 41 



-55 



+ 5 



-12-8 



- 9 6 



233 



16 



-11-0 



329 



21 



44 



7 



-21 



+37 



+ 7 



- 1-4 



+ 14-4 



354 



15 



+ 19-6 



99 



20 



43 



8 



- 4 



- 5 



-11 



+ 12-8 



- 4-8 



111 



14 



-15-8 



232 



20 



43 



7. The results here tabulated show numerous irregularities, 

 but this is not surprising when we consider that the argu- 

 ments and amplitudes ultimately depend upon the values 

 of PV and P 2 r , all. of which are less than 20 in absolute 

 magnitude, and o£ which the majority are less than 10. 

 Assuming the values of y' to be now correct within half a 

 unit, and this is certainly not true in every case, there is a 

 possible error of one unit in a and of two units in Ea. 

 Hence PV which is equal to Ear — z%a r may be over three 

 units in error, and P 2 r which is equal to Ea — z^a r may be in 

 error by nearly the same amount. Bearing this in mind, the 

 consistency of the values obtained may be regarded as quite 

 satisfactory. 



An examination of the values of fa shows a regular 



