14 ART. 19. — N. ICIIINOIIE : 



23. According to Blajko, the light-curve is quite symmetrical. 



24. Tlie light-curve shows a flat minimum as in U Cephei during one 



and a lialf hours. The curve is almost symmetrical, still the 

 increase of light shows a tendency towards a faster variation than 

 the decrease. 



25. The variation of light consists of the two similar symmetrical minima 



of different depth. 



Princ. in 10"\9 and lasts 6 hours 



Secon. in 10"M and lasts 3 hours. 



26. Perfectly symmetrical light-curve. Williams suspected the variat'ou 



of colour from red to white during the light-change. 



27. On March 23 1903, Hartwig ohserved a secondary minimum of tlie 



range 0™.4. 



28. Nearly symmetrical. 



29. Perfectly symmetrical light-curve, of a flat minimum lasting two 



hours. 



31. Perfectly symmetrical. 



32. Inequality of the period by Nijland is 



-0".000000104 E? 



33. The light-curve is symmetrica], the one-third of the entire duration 



being of constant minimum. 



35. Constant minimum lasting one and a half hours. Wendell considered 



there appeared a secondary minimum of a range of only one tenth 

 of the magnitude. 



36. The light-curve is symmetrical, showing a flat minimum which lasts 



a little over an hour. 



37. The light-curve is symmetrical and the decrease and increase of light 



go on nniformly with the time. According to Uugan, a secondary 

 minimum takes place, its range being 0"M6. 



38. This star shows two kinds of minima and the light-curve tends to 



that of ß Lyrre but I think it would be proper to include this star 

 in the Algols, as the constant light extends over the half of the 

 period. The principal sinks to lO'^.G and the sscondary, to 9'".8. 



39. The range of variation is not yet determined as the minimum exceeds 



13™. The light-curve is symmetrical so far as it is observed. 



43. Symmetrical light-curve, showing a flat minimum. 



44. Symmetrical light-curve showing a flat minimum extending over 10 



days and more. 



