109 Nr. 2095 110

ergab. Ich glaube daher, dass diese Methode, welche sich dorch ihre Einfachheit empfiehlt, wirklichen prak- tischen Werth hat, wenn der Beobachter sie mit der ntithigen Umsicht und Vermeidung der allerdings inijg- lichen systematischen Fehler durchfuhrt, - muss aber

f ir das eigentliche Detail ebenfalls auf meine ,,Mit- theilungen" verweisen, welche zum Sclilusse noch die Soanenflecken-Literatnr von Nr. 335 - 343 fortfuhren.

Zurich, den 16. Mai 1876.

W.Hersche1 1 2

W. Struve 3 J. Herschel 4 Dawes 5 Smyth 6 '8. Struve 7

8 9

10 Dawes 11

12 0. Struve 13

14 15

Miidler 16 0. Struve 17 Madler 18 0. Struve 19

20 Madler 21. 0. Struve 22

23 Madler 24

25 0. Struve 26 Jacob 27 Miidler 28 Jacob 29 Dawes 30 Madler 31

32 Secchi 33 0. Strnve 34 \Viunecke 35

Epoch 1782.87 1804.09 1825.31 1830.24 1831.01 1832.11 1832.25 1833.29 1835.34 1836.28 1842.27 1843.18 1843.30 1844.29 1845.31 1846.28 1846.30 1847.24 1847.33 1848.32 1848.33 1849.32 1850.96 1851.24 1852.30 1852.66 1853.18 1853.36 1853.96 1854.23 1854.31 1855.28 1855.29 1855.33 1855.34

0, 10801 130.4 150.3 159.0 160.9 164.1 164.6 168.5 178.1 185.8 298.5 306.3 308.6 315.5 320.9 325.8 325.4 329.4 329.6 333.3 333.3 336.6 342.0 342.8 345.9 346.9 348.5 348.9 350.7 351.5 351.7 354.7 354.8 354.8 354 9

P c O"80 1.06 0.84 - . -

0.55 0.55 0.49

0.33 -

- -

0.33 0.39 0.43

0.47

0.51 0.52

0.54 0.56

0.56 0.56 0.55 0.55 0.56 0.56

-

-

-

-

- - -

0.56 -

@o--oc Po-& +2'8 - 3-0.5 -

-12.5 - +3.6 +0"13

+4.1 - -4.1 -0.05 -1.2 -0.03 4-4.3 -0.04 -4.2 - -7.1 -+0.02 f 2 . 1 - -7.3 - +8.2 $0.04 +5.4 +0.09 $0.2 +0.01 +4.7 - -2.5 -0.02 +9.0 - -0.8 -0.10 -1.2 -0.09 +3.8 - -4.8 -0.11 -6.2 -0.07 -0.3 - c 4 . 2 -0.09 -7.8 -0.10 -5.2 -0.10 -2.4 -0.20 -0.7 -0.16 -5.3 -0.01 +0.2 - +4.6 - f 5 . 2 - -6.1 -0.09

+11.3 -

Epocli 0, Secchi 36 1856.17 35704 Winnecke 37 1856.30 357.9 Madler 38 1856.42 358.3 0. Struve 39 1857.28 0 . 9 Morton 40 1858.29 1.1 Secchi 41 1837.36 1 . 2

42 1858.35 4.3 0. Struve 43 2859.30 7.5

44 1860.28 10.8 45 1861.28 14.2 46 1864.30 25.0

Dembowski 47 1865.26 28.7 Engelmann 48 1863.67 30.4 Secclii 49 1866.30 32.9 Engelmann 50 1867.34 37.0 0. Struve 51 1868.63 42.0 Dembowski 52 1870.15 47.7 0. Struve 53 1870.28 48.3

54 1870.33 48.5 Dun& Dembowski 55 1871.13 57.4 0. Struve 56 1871.30 52.1 Dun& 57 1871 31 52.1 Wilson 58 1872.18 55.4 Dembowski 59 1872.21 55.5 0. Striive 60 1872.31 55.8 Wilson 61 1873.23 59.3 Gledhill 62 1873.29 59.6 Dembowski 63 1873.43 60.0 0. Struve 64 1873.96 61.9 Uembowski 65 1875.25 66.3 Schiaparelli 66 1875.26 66.3 Dun& 67 1875.31 66.5 Gledhill 68 1876.20 70.2

Markree, 16. Mai 1876.

Pc O"56

0.56 0.54

0.54

0.53 0.53 0.52 0.50

0.50 0.50 0.50 0.50

0.50 0.50

0.50 0.50 0.50

0.51

0.52

0.52 0.53 0.53 0.53 0.53

-_

-

-

-

-

--

-

-

-

@n-@c ~ 0 - p ~

$0.9 - +2.7 -0.20 -2.8 -0.02 -6.1 - +3.0 -0.19 -4.0 - -0.7 1-0.07 -0.6 $0.06 -2.2 +0.04

3-2'0 -0"17

f 4 . 2 Jr0.02 +1.3 - -7.4 0.00

0.0 -0.20 -3.3 +0.07 +2.3 +0.05 +4.7 - +5.3 -f 0.08

-10.6 -0.23 + O . l - f 4 . 6 $0.07 -9.4 -0.20

+10.9 -0.02 -1.6 - +3.1 $0.01 -3.0 - -2.6 -0.12 +0.2 - +3.4 +0.07 -1.7 -0.07 -3.6 -0.04 f 0 . 3 -0.10 -6.5 4 . 1 3 W. Doberck.