































[PLASKETT-DELURY] THE SOLAR ROTATION 37 
TABLE IV.—SuMMARY OF MEASURES. 
Series II.—Measured by DeLury.—2 5600. 30° 
| Ist Correction 2nd Correction 
| Date Measured | Method Method 
Plate G.M.T.1911) Velocity | = 
Lig.) |Vaez| mat MINE V, 
L 833 Aug. 10-18} 1-394 29° 48/| 1-617] 30° 11//24° 48/| 1-618 | 1-722 
834 “ 10-21} 1-402 (29 48) 1-626} 30 11124 49 | 1-626 | 1-731 
836 “ 30-15) 1-379 129 44) 1-613) 30 24124 10 | 1-606 | 1-726 
837 “ 30-18) 1-448 129 44] 1-680} 30 28/24 17 | 1-672 | 1-799 
838 “ 30-21) 1-390 |29 44) 1-622) 30 24/24 13 | 1-633 | 1-755 
839 | “ 30-22) 1-320 (29 44/| 1-547; 30 28/24 17] 1-540 | 1-656 
842 Sep. 8-14; 1-482 29 26) 1-731) 30 5123 41) 1-727 | 1-859 
843 “  8-17| 1-869 {30 2| 1-606) 30 3924 14] 1-599 | 1-726 
844 ENS TSI 1-371, 380 21 1-608) 30 38/24 11] 1-604 | 1-730 
845 ‘ 8-21) 1-411 30 2| 1-650) 30 4024 16) 1-644 | 1-772 
846 8-22} 1-425 30 21 1-668) 30 38/24 11) 1-662 | 1-793 
847 “ 8-30) 1-384 (30 2| 1-623) 30 38124 12); 1-618 | 1-746 
848 | 8-31} 1-510 30 2| 1-758] 30 39/24 14} 1-752 | 1-890 
849 2 S.a0| 472° 130 2) 1-718) 30 3924 14) 1-711 | 1-846 
831 “ 11-20} 1-495 130 21 1-743) 30 39124 14| 1-739 | 1-876 
L 852 “ 11-21) -1-409 30 2| 1-650) 30 38124 12 | 1-644 | 1-774 
Means | (Linear) 29 53| 1.654 30 30124 i6| 1-650 | 1-775 
Means (Angular) 13°-54 | | 13°-60 | 13°-82 
Probable: Error Single Plates. Lee CRE RE EC Te = + -039 
d Moana vith cep eee cere hie ts = + -010 
45° 
L 833 Aug. 10-19} 1-143 [44° 39’) 1-322| 43° 55’/37° 37’) 1-353 | 1-517 
834 “ 10-30] 1-003 |44 39) 1-172) 43 56,37 39 | 1-201 | 1-344 
836 “ 30-15} 1-122 |44 33) 1-306| 44 5136 48] 1-328 | 1-516 
837 “ 30-19] 1-168 |44 383] 1-354) 44 1236 58] 1-376 | 1-568 
838 “ 30-21; 1-098 |44 33 | 1-278] 44 5136 53] 1-292 | 1-472 
839 “ 30-22} 1-126 |44 33] 1-309] 44 12,36 58/ 1-330 | 1:515 
842 Sep. 8-14 1-065 |44 3| 1-248} 43 31 |36 4| 1-271 | 1-499 
843 % 8-17} 1-050 45 2| 1-231] 44 2636 56 | 1-255 | 1-439 
844 “ 8-19] 1-064 (45 2| 1-246] 44 2436 52) 1-270 | 1-455 
845 “ 8-22) 1-017 |45 D195) 44 24 560521002218 309 
846 “8-23 -981 45 21 1-057| 44 24,36 52] 1-178 | 1-350 
847 “ 8-30) 1-028 (45 2| 1-207| 44 2536 538] 1-232 | 1-412 
848 “ 8-32) 1-060 {45 2| 1-241] 44 26136 56| 1-266 | 1-451 
849 | “ 8-33} 1-106 |45 2| 1-291) 44 2636 56] 1-317 | 1-510 
851 | “ 11-20; 1-006 (45 2| 1-183) 44 2636 56| 1-208 | 1-384 
L 852 | “ 11-22) 1-086 {45 2| 1-270) 44 2486 53) 1 -298 | 1-487 
Means | (Linear) 44 58|1-251 44 14/36 56] 1-274 | 1-457 
Means | (Angular) [12° 52 12°.62 |12°-94 
Probable Error Single/Plate.:........ +5 2a eae = + -052 
5 Mean uns us Le. CHR PARERERN = + -013 
