Tables. 



Table Pago 



I. Horrebow's Sun-spot Observations 4 



II. Schwabe's Observations 1823-43 4 



III. The Relative Numbers and Spot-areas 1874—1910 5 



IV. The Distribution of the Sun-spots in Latitude 1886—1909 14 



V. Days with Solar Photographs 16 



VI. Extract from the Ledgers of Groups of Sun spots 17 



VII. Daily Mean Areas of Sun-spots 18 



VIII. The Number of Observations in different Years 22 



IX. The Number of Observations at different Latitudes 22 



X. The Motions in Longitude of the Spots at different Latitudes 25 



XI. Characteristics of the Motions in Longitude 28 



XII. Correlation between AX.cos ß and log A 31 



XIII. Characteristics of the Motions in Longitude 1886—1909 33 



XIV. The angular Velocity at different Latitudes 36 



XV. Computed angular Velocities at different Latitudes 39 



XVI. Means and Dispersions of the Motions in Longitude and Latitude for different 



Spot-sizes 40 



XVIL The Values of x„ for different Spot-sizes 1886—1909 42 



XVIIL The Values of Ox for different Spot-sizes 1886—1909 42 



XIX. The Values of V — 35'.461 for different Spot-sizes 1886—1909 43 



XX. The Motions in Latitude of the Spots at different Latitudes 47 



XXI. Characteristics of the Motions in Latitude 49 



XXII. The Values of : at different Latitudes 49 



XXIII. Characteristics of the Latitude Motions for different Spot-sizes 50 



XXIV. Proper Motion in Latitude of Recurrent Spot Groups 51 



XXV. Values of AL sin J and AZ according to Dyson and Maunder 53 



XXVI. The Motions in Latitude at different Times in the Year 54 



XXVII. Mean Values of the Motions in Latitude at different Times in the Year 56 



XXVIII. Values of M(sm%) and Micoau^) at different Times in the Year 58 



XXIX. The Dispersion of the Motions for different Spot-sizes 62 



XXX. Con elation between the Motions in Longitude and Latitude 1886—1909 66 



XXXI. Coefficient of Correlation and Line of Symmetry 73 



XXXIL Characteristics of the Spot-sizes 78 



XXXIII. Number of Spots or Groups of Spots at different Distances from the Central Meridian 80 



XXXIV. The first Observation of Non-recurrent Sun-spots 82 



XXXV. The last Observation of Non-recurrent Sun-spots 83 



XXXVI. The first Observation of Recurrent Sun-spots 84 



XXXVII. The last Observation of Recurrent Sun-spots 85 



XXXVIII. First and last Observations of the Sun-spots 86 



XXXIX. Mean Values of the Motions in Longitude at different Distances from the Central 



Meridian 1886—1909 90 



XL. Characteristics of the Distribution of synodic Rotation Periods 91 



