Y Yale Observatory, [157]. Yerkes Observatory, [55], [111], [202]. Young, C. A., [54], [56], [57], [58], [60], [87], [114], [190].

Z Zach, F. X., [97], [98], [152]. Zantedeschi, [77]. Zenger, [85], [88]. Zöllner, J. C. F., [54], [58], [60], [84], [103], [132], [232].

CORRIGENDA.

P. 30, l. 5, for “objects” read “orbits.” P. 36, l. 13, for “unable” read “able.” P. 61, l. 17, for “8″.371” read “8″.571.” P. 63, l. 21, for “bases” read “gases.” P. 100, l. 16, for “Schwussmann” read “Schwassmann.” P. 167, l. 28, for “Strumpe” read “Stumpe.” P. 184, l. 11, for “star-variables” read “variable stars.” P. 199, l. 23, for “2102” read “1202.”

THE END.

PRINTED BY WILLIAM BLACKWOOD AND SONS.

Transcriber’s Notes