[ PLASKETT-DELURY] THE SOLAR ROTATION 35 
Tage ITJ.—Summary or MEASURES. 







































Series I—Measured by Plaskett— À 5600. 80° 
1st Correction 2nd Correction 
Plate | Date Measured Method Method 
G.M.T. 1911} Velocity ee 
g Vate| Pa Vi 
780a June.17:23 -221 79° 55 -231 |74° 57/1729 48’| -349 -395 
c “17-23 -178 |79 55 -189 |74 57172 48 -283 -324 
e DOI 206 |79 55 +217 [74 57172 48 -326 373 
78la “ 17-24 -241 |79 55 -284 |74 53/72 48 -429 -490 
c “ 17-24 +216 {80 54 254175 25)73 0 -421 -486 
e “ 17-24 -260 179 55 | -303 |74 44172 32 -463 - 529 
783a + Ue ie Lil TON 53) | NSE No W672) 46 - 266 -311 
c iene -201 179 53 -213 175 16/72 46 -311 -304 
e ann 1) 3717 “191 179 53 -202 175 16172 46 -296 -346 
785a TOUS +244 179 53 -289 175 30/73 0 -417 -487 
c LOTS +226 |79 53 -270 |75 30 173 0 -391 -457 
e ROIS -226 |79 53 -270 |75 30/73 0 -391 -457 
788a “ 20-16 -210. 179 52 -222 175 20/72 35 +323 -384 
c “20-16 -217 |79 52 -236 175 20172 35 -334 -397 
e = *20-16 -190 179 52 -202 175 20172 35 - 294 -349 
790a «21-31 -300 179 50 -316 175 237231 -455 -543 
@ 3 PAlaai! -260 |79 50 -273 175 19172 25 -399 -478 
e DIE Si -269 |79 50 -285 |75 9/72 15 -419 -499 
Means | (Linear) 19 53 -247 175 1372 43 -305 -426 
Means | (Angular) 9°-98 10°-16]10°-18 
Probable: EmrorssinglesPlates.ss7c.ce cc 027 
: F pw aNTeainitts Ne Rite te re à Doteire Riel = + -006 
85° 
7S0b June 17-23 -092 (84° 49’ | -100 |77° 38//75° 6’| -245 291 
d = lit-23 -119 |84 49 | -129 177 38/75 6 -313 372 
FH OT 23 -135 (84 49 -145 177 938 |75 6 -393 419 
(lb | “ 17:24 -109 (84 49 -142 |77 38 |75 3 -345 411 
cl || 17-24 -136 |84 49 =MOS) fa» P20 WALT toe: -420 495 
f © 17-24 “133 1184 49 -165 |77 22174 48 -415 490 
783b | AG a7, -107 |84 45 | -118 |78 1 |75 3 +272 334 
cl | LO ily) -098 (84 45 -107 |78 1 |75 3 -250 307 
fi SN CET -084 184 45 | -092 |78 1 175 3 -216 266 
785b >» 19-08 -129 184 45 | -165 [78 17/75 20 -379 -463 
d “ 19-18 -161 ‘S84 45 99 8 dit fs 20 -458 -559 
f ae LORS -145 (84 45 | -182 (78 17 75 20 -418 -510 
788b “ 20-16 -103 (84 43 -113 |78 D 74 538 -259 | -328 
d “ 20-16] ‘-088 |84 43 | -097 [78 5/74 53 .223 | -283 
it = 20-116 -104 (84 43 -114 178 5 4 538 -262 332 
790b Ale -098 184 50 | -108 178 5174 40 -255 -322 
d = 213i -084 (84 50 -094 |78 074 33 -217 274 
f Palos So GID SE ON APS TS) 700022 -288 304 
| | 
Means | (Linear) 84 47 | -131 77 55|74 58| -310 -379 
Means | (Angular) | 10° -23| 10°-51!10°-37 
Probable Error Single Plate seer ee =" =P 020) per kim. 
“ “ aan 
Mean: Src ci aeeremmmctses nrcasteen peace ites = + -005 per km. 
