I refer to the nebula 13 M, known as Halley's nebula (Plate 3).

This nebula is visible to the naked eye, and in a good telescope it is a most wonderful object: "perhaps no one ever saw it for the first time without uttering a shout of wonder." It requires a very powerful telescope completely to resolve this fine nebula, but the outlying streamers may be resolved with a good 3-inch telescope.

Sir W.
Herschel considered that the number of the stars composing this wonderful object was at least 14,000.

The accepted views respecting nebulae would place this and other clusters far beyond the limits of our sidereal system, and would make the component stars not very unequal (on the average) to our own sun.

It seems to me far more probable, on the contrary, that the cluster belongs to our own system, and that its components are very much smaller than the average of separate stars.
Perhaps the whole mass of the cluster does not exceed that of an average first-magnitude star.
The nebulae 92 M and 50 H may be found, after a little searching, from the positions indicated in the map.