No. 2093. "A most wonderful phenomenon. A very large space 20' or 30' broad in Polar Distance, and 1{m} or 2{m} in Right Ascension, full of nebula and stars mixed. The nebula is decidedly attached to the stars, and is as decidedly not stellar. It forms irregular lace-work marked out by stars, but some parts are decidedly nebulous, wherein no star can be seen." Sir John Herschel gives a figure of this curious spot, which he says represents its "general character, but not the minute details of this object, which would be extremely difficult to give with any degree of fidelity." It lies about 3 degrees west of the bright star ζ Cygni. Among the numerous curious objects observed by Sir John Herschel during his visit to the Cape of Good Hope, the following may be mentioned:-- _h_ 2534 (H iv. 77). Near τ{4} Eridani. Sir John Herschel says, "Attached cometically to a 9th magnitude star which forms its head. It is an exact resemblance to Halley's comet as seen in a night glass."... "A complete telescopic comet; a perfect miniature of Halley's comet, only the tail is rather broader in proportion."[367] _h_ 3075. Between γ Monocerotis and γ Canis Majoris. "A very singular nebula, and much like the profile of a bust (head, neck, and shoulders) or a silhouette portrait, very large, pretty well defined, light nearly uniform, about 12' diameter. In a crowded field of Milky Way stars, many of which are projected on it."[368] _h_ 3315 (Dunlop 323). In the Milky Way; about 3° east of the Eta Argûs nebula. Sir John Herschel says, "A glorious cluster of immense magnitude, being at least 2 fields in extent every way. The stars are 8, 9, 10, and 11th magnitudes, but chiefly 10th magnitude, of which there must be at least 200. It is the most brilliant object of the kind I have ever seen" ... "has several elegant double stars, and many orange-coloured stars."[369] This should form a fine object in even a comparatively small telescope, and may be recommended to observers in the southern hemisphere. A telescope of 3-inches aperture should show it well. Among astronomical curiosities may be counted "clusters within clusters." A cluster in Gemini (N.G.C. 2331) has a small group of "six or seven stars close together and well isolated from the rest." Lord Rosse describes No. 4511 of Sir John Herschel's General Catalogue of Nebulæ and Clusters (_Phil. Trans._, 1864) as "a most gorgeous cluster, stars 12-15 magnitude, full of holes."[370] His sketch of this cluster shows 3 rings of stars in a line, each ring touching the next on the outside. Sir John Herschel described it as "Cluster; very large; very rich; stars 11-15 magnitude (Harding, 1827)," but says nothing about the rings. This cluster lies about 5 degrees south of δ Cygni.