"Mittens Knitted on Two Needles" in Regia 4-fädig in color 1991 (grey heather) and Paton's Kroy in "Muslin" (cream). The crochet edging was improvised. A handsome and comfortable fingerless mitt. Photos from A Bluestocking Knits.
The terms "mitts" and "mittens," though today we usually use to refer to, respectively, fingerless-but-thumbed gloves and those with one fully-enclosed space each for thumb and all of the fingers together, seem to have been used fairly interchangeably in the early days of published knitting patterns, as here in the "Mittens Knitted on Two Needles" by Miss H.P. Ryder, in her Winter Comforts and How to Knit Them (1876). The Misses Ryder, sisters Elizabeth and Henrietta, were both writers of knitting "receipts" during the middle and later parts of the Victorian period; they were from Richmond, in Yorkshire.
The thumb is shaped with short rows. Note, too, this early use of the slipped-stitch selvage.
Uploaded to Archive.org courtesy the Richard Rutt Collection at the University of Southampton.
See also the article "The Richmond Glove and its Creator, Henrietta Pulleine Ryder" by Lesley O'Connell Edwards in the March/April 2018 issue of Piecework (Ravelry link here) which has background information on the Ryder sisters and an updated pattern for Miss Henrietta's Richmond Glove, which is a layered duo -- knitted in one piece -- of glove and fingerless mitt.
A blog post by Ann Kingstone about the Ryder sisters and the Richmond Glove is here.
The original ribbed top edge of the Mitten Knitted on Two Needles, before sewing up the side seam or edging the thumb.