Sergey
== Description == '''Dudgeon's sphygmograph''', matching the instrument in H. P. Blavatsky's Scrapbooks, volume 12, page 218, item 1. The upright lever, dashed recording-paper path, pen, clamps, wrist strap, dial and hatching match. The book numbers this image '''Fig. 1'''; the album and ''Psyche'' number the matching instrument '''Fig. 2'''. The book is a verified alternate impression, not an established physical source of the album cutting. The red ornament in the magazine...
