Seen as a double, both components appear white.
Now, if the observer's telescope is sufficiently powerful, each of the components may be seen to be itself double.

First try [epsilon]^{1}, the northern pair.

The line joining the components is directed as shown in Plate 3.

The distance between them is 3".2, their magnitudes 5 and 6-1/2, and their colours yellow and ruddy.

If the observer succeeds in seeing [epsilon]^{1} fairly divided, he will probably not fail in detecting the duplicity of [epsilon]^{2}, though this is a rather closer pair, the distance between the components being only 2".6.