

































[PLASKETT-DELURY] THE SOLAR ROTATION 33 
Tage II].—SumMary oF MEASURES. 
Series I—Measured by Plaskett— 45600. 30° 
| 
ist Correction 2nd Correction 
Plate Date Measured | Method Method 
GEE oll Velocity, | À £ 
| g Vato @1 P2 Vv, Ve 
772d June 15-22} 1-493 |30° 0/| 1-633 |29° 26//28° 52’) 1-647 | 1-658 
777d “ 17-13] 1-496 |29 59] 1-639 29 27 28 44) 1-651 | 1-667 
779d “ 17-20) 1-545 |29 59| 1-701 |29 32/28 50/ 1-715 | 1-730 
782¢ “ 19-15) 1-483 |29 59| 1-639 29 37,28 50 1-646 1-662 
784c “ 19-20 1-546 129 59/ 1-699 29 38/28 52] 1-706 | 1-729 
787¢ “ 20-15) 1-447 |29 59) 1-583 [29 23/28 45) 1-600 | 1-611 
789c “ 21-30) 1-487 29 59] 1-622 (29 4228 49] 1-630 | 1-649 
796c “ 30-23) 1-498 130 27 | 1-665 130 1228 33| 1-672 | 1-707 
804c July 8-15) 1-455 |29 56 | 1-622 (29 55/27 44] 1-628 | 1-673 
813c | “ 20-32) 1-468 |29 53) 1-627 (30 13/27 25) 1-620 | 1-680 
814c “ 920-35| 1-455 |29 53| 1-614 130 15/27 30| 1-605 | 1-665 
817¢ “ 22-20) 1-520 |29 56] 1-692 |30 2027 15] 1-683 | 1-751 
819c © 97-15 1-440 |29 511) 1-611 |30 23/27. 16! 1-602 | 1-669 
$20¢ ‘ 27-19, 1-504 (29 51] 1-678 30 22/27 13 1-670 | 1-740 
821c 07000 055520 Sls 800022127181 2 708 
822c | 27. Solh Leo, 20005 TN 6800 300022) 27 MI Gat | 1-741 
826c | Aug. 1-15) 1-467 |30 20] 1-642 30 5627 31] 1-630 | 1-707 
827c | # 1:18) 1-491 29 50! 1-657 130 27 27 3 | 1-642 | 1-716 
831c © 1-36 1-494 29 46] 1-660 130 24 |27 2| 1-645 | 1-719 
— | | = 
Means | (Linear) 29 58] 1-652 (30 5127 56] 1-652 | 1-698 
‘Means | (Angular) 13-54 13-55 | 13-64 
Erobable BrrornmoinpleiPlate er tee eee = = -025 
oS à CATS NE RP EE OU = + -006 
15° 
772e June 15-22| 1:133 44° 59’) 1-238| 43° 54/43° 13’) 1-269 | 1-286 
777e ‘ 17-13| 1-063 |44 59] 1-168) 43 51 [43 0; 1-197 | 1-220 
779e “ 17-20} 1-172 |44 59) 1-271) 44 1143 10] 1-300 | 1-323 
782d | “19-15! 1-081 |44 59) 1-205) 44 4 43 5| 1-231 | 1-256 
784'a “ 19-20} 1-163 |44 59) 1-288) 44 9143 12) 1-812 | 1-336 
7874 | “ 20-15} 1-048 |44 59 | 1-151| 44 5 (43 111-176 | 1-200 
789d | “ 21-30) 1-126 |44 58] 1-227) 44 12 [43 8 | 1-249 | 1-280 
796d | “ 30-23] 1-181 |45 26] 1-316] 44 3442 34/ 1-350 | 1-394 
804d | July 8-15) 1-142 (44 53] 1-275 44 17/41 39] 1-295 | 1-370 
8134 | “ 20-32} 1-198 |44° 48 | 1-317| 44 40 41 16 | 1-321 | 1-416 
8144 | “ 90.35 1-171 |44 48| 1-294) 44 42 41 23 | 1-296 | 1-389 
817d_ | « 99.20| 1-195 |44 43| 1-336] 44 47 41 17] 1-340 | 1-440 ® 
819d | “ 27-15} 1-134 |44 44] 1-274) 44 51/41 6| 1-275 | 1-375 
820d | “ 27.19) 1-125 |44 44] 1-266) 44 50/41 3 | 1-266 | 1-368 
821d “ 27-22) 1-088 {44 44] 1-221) 44 50/41 3 | 1-221 | 1-319 
822d “ 97.35) 1-162 |44 44] 1-288) 44 49/40 59] 1-268 | 1-394 
826d Aug. 1-15) 1-227 |44 42] 1-372! 44 55 40 50| 1-370 | 1-487 
8274 | ë 1-18) 1-274 44 aA 1-406) 44 5540 51) 1-402 | 1-522 
831d | . 1-36] 1-152 144 391 1-279) 44 52/40 51] 1-276 | 1-384 
Means | (Linear) 44 52) 1-273) 44 29/41 56] 1-286 | 1-356 
Means | (Angular) 12-75 12-80 | 12-94 
Probable Error Single Plate........ = + -042 
% #4. Mean see ARRETE RER EE ARE — == -010 
