Illustration of position of variable star, by Norman Pogson Ink and pencil drawing of location of 1 Var. Cassiopeiae. Position defined within a grided view, telescope observations given as range 6 to 12 magnitude for a period of 436 days. Magnitude notation defined by symbols at the bottom of the page. Drawing, likely prepared for engraving - could be the plate noted in previous item as in the hands of engraver Basire. Likely enclosure from HS/14/1. At the back, handwritten list of plants, likely in Sir John Herschel's hand. 1860